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On February 9 , 2011 , Frolik was traded to the Chicago Blackhawks , along with goaltender Alexander Salà k for Jack Skille , Hugh Jessiman , and David Pacan .

Frolà k was traded to the Chicago Blackhawks , along with Alexander Salak for Hugh Jessiman and David Pacan on February 9 , 2011 .

Michael Frolà k ( ; born February 17 , 1988 ) is a Czech professional ice hockey player currently playing for the Chicago Blackhawks of the National Hockey League ( NHL ) .

Michael Frolà k ( born February 17 , 1988 in Kladno , Czechoslovakia ) is a professional Czech ice hockey player that currently plays for the Chicago Blackhawks of the National Hockey League ( NHL ) as a center .

Pizmonim ( Hebrew -- , singular pizmon ) are traditional Jewish songs and melodies with the intentions of praising God as well as learning certain aspects of traditional religious teachings .

Pizmonim ( Hebrew -- , singular pizmon ) are Jewish songs and melodies sang to praise God .

Lià ge is located in the center of the golden triangle Paris - Amsterdam - Frankfurt that handles 66 % of European freight , 75 % when taken together with London .

Lià ge is located in the center of the golden triangle Paris - Amsterdam - Frankfurt that handle 66 % of the European freight , 75 % with London added .

It is mainly used for freight operation but also serves more than 23 destinations for passengers ( mainly charters ) .

It is mainly used for freight operation but also serve more than 21 destinations for passengers ( mainly charters ) .

Lià ge Airport is the world hub of TNT Airways , and the European hub of CAL Cargo Air Lines , El Al Cargo , Ethiopian Cargo and Avient Aviation .

Lià ge Airport is the world hub of TNT Airways , and the European hub of CAL Cargo Air Lines , El Al Cargo and Ethiopian Cargo ( using Southern Air aircrafts ) .

It was at the end of 2009 the 8th biggest cargo airport in Europe .

It was at the end of 2007 the 8th biggest cargo airport in Europe and the 38th biggest in the world .

Like many Egyptian writers and intellectuals , Mahfouz was on an Islamic fundamentalist `` death list '' .

Like many Egyptian writers and intellectuals , Mahfouz was on a `` death list '' by Islamic fundamentalists .

Prior to his death , Mahfouz was the oldest living Nobel Literature laureate and the third oldest of all time , trailing only Bertrand Russell and Halldor Laxness .

Before his death , Mahfouz was the oldest living Nobel Literature laureate and the third oldest of all time , only Bertrand Russell and Halldor Laxness were older .

He defended Salman Rushdie after Ayatollah Ruhollah Khomeini condemned Rushdie to death in 1989 , but also criticized his Satanic Verses as `` insulting '' to Islam .

He defended Salman Rushdie after the Iranian spiritual leader Ayatollah Ruhollah Khomeini condemned him to death , but later he criticized Rushdie 's Satanic Verses as `` insulting '' to Islam .

At the time of his death , he was the only Arabic-language writer to have won the Nobel Prize .

At the time of his death , he was the only Arabic-language writer to have won the Nobel Prize for Literature .

As a consequence of his outspoken support for Sadat 's Camp David peace treaty with Israel in 1978 , his books were banned in many Arab countries until after he won the Nobel Prize .

Because of his outspoken support for Sadat 's Camp David peace treaty with Israel , his books were banned in many Arab countries until after he won the Nobel prize .

Born into a lower middle-class Muslim family in the Gamaleyya quarter of Cairo , Mahfouz was named after Professor Naguib Pasha Mahfouz ( 1882 â `` 1974 ) , the renowned Coptic physician who delivered him .

Mahfouz was born in the Gamaliya quarter of Cairo and was named after Professor Naguib Pasha Mahfouz ( 1882-1974 ) , the renowned Coptic physician who delivered him .

From the window he often saw British soldiers firing at the demonstrators , men and women .

From the window he often saw English soldiers firing at the demonstrators , men and women .

Naguib Mahfouz ( , NagÄ `` b Maá fÅ `` á `` ) ( December 11 , 1911 â `` August 30 , 2006 ) was an Egyptian writer who won the 1988 Nobel Prize for Literature .

Naguib Mahfouz ( , NagÄ `` b Maá fÅ `` á `` ) ( December 11 , 1911 â `` August 30 , 2006 ) was an Egyptian novelist who won the 1988 Nobel Prize for Literature and who managed to modernize Arabic literature .

He is regarded as one of the first contemporary writers of Arabic literature , along with Tawfiq el-Hakim , to explore themes of existentialism .

He is one of the few writers of Arabic literature , who explored themes of existentialism .

Saint - à tienne-de-Tin à e is a commune in the Alpes-Maritimes department in southeastern France .

Saint - à tienne-de-Tin à e is a commune .

The NasÄ `` r al-Mulk Mosque ( - Masjed-e Naseer ol Molk ) is a traditional mosque in Shiraz , Iran , located in Goade-e-Araban place ( near the famous Shah Cheragh mosque ) . The mosque was built during the QÄ jÄ r era , and is still in use under protection by Nasir al Mulk 's Endowment Foundation .

Nasir al-Mulk Mosque ( Nasir ol molk ) is a traditional mosque in Shiraz Iran .

Joà # o Carlos dos Santos or simply known as Joà # o Carlos ( born September 10 , 1972 in Sete Lagoas , Brazil ) is a Brazilian football player .

Joà # o Carlos dos Santos ( born 10 September 1972 ) is a former Brazilian football player .

Magglio Josà Ordà à ez Delgado ( ; born January 28 , 1974 in Caracas , Venezuela ) is a Venezuelan Major League Baseball right fielder for the Detroit Tigers .

Magglio Jose `` Maggs '' Ordà à ez ( b. January 28 , 1974 ) is a Venezuelan Major League Baseball player . He is a right fielder and right-handed batter .

He has played for the Chicago White Sox ( 1997 â `` 2004 ) and Detroit Tigers ( 2005 â `` present ) .

He played for the Chicago White Sox from 1997 to 2004 . He has played for the Detroit Tigers since 2005 .

Peter Tim Verbeek ( born March 12 , 1956 in Rotterdam , Zuid-Holland ) , more commonly known as Pim Verbeek is a Dutch football manager who was the head coach of the Australia national football team .

Pim Verbeek ( born 12 March 1956 ) is a former Dutch football player .

The answering machine or message machine , also known as the sales person 's nightmare ( telephone answering machine ( or TAM ) in the UK and some Commonwealth countries ) and previously known as an ansaphone , ansafone , or telephone answering device ( TAD ) is a device for answering telephones and recording callers ' messages .

An answering machine ( other names are answerphone , ansaphone , ansafone and Telephone Answering Device ( TAD ) ) is a machine .

The University of Chicago and Cornell University both have reproductions of Christ Church 's dining hall ( in the forms of Hutchinson Hall and Risley 's dining hall respectively ) .

The University of Chicago and Cornell University both have reproductions of Christ Church 's dining hall .

Christ Church has produced thirteen British prime ministers , which is equal to the number produced by all 45 other Oxford colleges put together and more than any Cambridge college ( and two short of the total number for the University of Cambridge , fifteen ) .

Christ Church has produced thirteen British prime ministers . This is equal to the number produced by all 45 other Oxford colleges put together , and two short of the total number for the University of Cambridge ( fifteen ) .

Stained glass windows in the cathedral and other buildings are by the Pre-Raphaelite William Morris group with designs by Edward Burne-Jones

Stained glass windows in the cathedral and other buildings are by the Pre-Raphaelite William Morris group with designs by Edward Burne-Jones .

Distinctive features of the college 's architecture have been used as models by a number of other academic institutions , including the National University of Ireland , Galway , which reproduces Tom Quad .

Distinctive features of the college 's architecture have been used as models by a number of other academic institutions .

Mastung District is a district located in the north west of Balochistan province , Pakistan .

Mastung is a district located in the north west of Balochistan province .

The council changed the name of the local government district covering the city to Derry on 7 May 1984 , consequently renaming itself Derry City Council .

In 1984 the city council changed the name of the local government area back to its original title of Derry .

This did not change the name of the city , although the city is coterminous with the district , and in law the city council is also the `` Corporation of Londonderry '' or , more formally , the `` Mayor , Aldermen and Citizens of the City of Londonderry '' . The form `` Londonderry '' is used for the post town by the Royal Mail , however use of Derry will still ensure delivery .

But the City 's official title is still Londonderry .

Antonio de Torres Jurado ( 13 June 1817 â `` 19 November 1892 ) was a Spanish guitarist and luthier .

Antonio De Torres Jurado ( June 13 , 1817 â `` November 19 , 1892 ) was a Spanish guitarist and guitar maker .

Cormoranche-sur-Sa à ne is a commune in the Ain department in eastern France .

Cormoranche-sur-Sa à ne is a commune .

Gwadar District is divided into two sub-divisions , namely Gwadar and Pasni , which are further divided into tehsils and sub-tehsils .

For administrative purposes , the district is divided into two sub-divisions , namely Gwadar and Pasni . These sub-divisions are further divided into tehsils and sub-tehsils .

Gwadar city is the district headquarters of Gwadar District .

Gwadar is the headquarters of Gwadar District .

The Gwadar sub-division comprises two tehsils , named Gwadar and Jiwani , and one sub-tehsil named Suntsar whereas Pasni sub-division is divided into Pasni and Ormara tehsils .

Gwadar sub-division comprises two tehsils , named Gwadar and Jiwani , and one sub-tehsil named Suntsar . Pasni sub-division is divided into Pasni and Ormara tehsils .

Previously , Gwadar had been one of three tehsils ( subdistricts ) of Makran District prior to its upgradation as a division .

Gwadar is the headquarters of Gwadar District . Previously it was one of 3 tehsils of Makran District before the district was upgraded to a division .

Gwadar was made a district on July 1 , 1977 when Makran Division was created and divided into three districts .

Gwadar was notified as a district on July 1 , 1977 when Makran Division was created and divided into three districts .

Currently he is leader of the Pirate Party Germany .

He is leader of the Pirate Party of Germany .

He was already party leader from May 2007 to May 2008 , and afterwards deputy leader for one year , before he became re-elected leader of the party in July 2009 , and once more in May 2010 .

He was first elected party leader in May 2007 . In May 2008 he became deputy leader for one year , before he became re-elected leader of the party in July 2009 , and once more in May 2010 .

Seipenbusch , a founding member of his party , studied physics at the University of MÃ 1\/4 nster .

Seipenbusch was a founding member of his party . He studied physics at the University of MÃ 1\/4 nster .

Jens Seipenbusch ( born August 6 , 1968 ) is a German politician and physicist .

Jens Seipenbusch ( born 6 August 1968 ) is a German politician and physicist .

Reuilly-Sauvigny is a commune in the Aisne department in Picardy in northern France .

Reuilly-Sauvigny is a commune . It is found in the region Picardie in the Aisne department in the north of France .

Icing in ice hockey occurs when a player shoots the puck across at least two red lines , the opposing team 's goal line being the last , and the puck remains untouched . It is , however , not icing if the puck is shot from behind the halfway line into the goal .

Icing in ice hockey is a rule the happens when a player shoots the puck across at least two red lines , the other team 's goal line being the last , and the puck remains untouched but it is not icing if the player shoots the puck from behind the halfway line of the ice into the goal .

In this case , the goal is counted .

If the goal went into the net it would be counted as a goal .

This is called automatic or no-touch icing . This rule has been adopted after an incident in the Czechoslovak First Ice Hockey League in 1990 , when LudÄ k Ä ajka , rushing to get to the puck in an icing situation , crashed into the boards , suffered severe spinal injuries , and died a few weeks later .

There is also automatic or no-touch icing which is used mostly in lower-level professional hockey leagues like the ECHL and Central Hockey League , It was enforced in 1990 after LudÄ k Ä ajka , a Czech player rushed to get to the puck in an icing situation , he crashed into the boards , suffered severe spinal injuries , and died a few weeks later .

Colonial Heights is an independent city in Virginia , United States .

Colonial Heights is a city of Virginia in the United States .

Southeast Asia is geographically divided into two subregions , namely Mainland Southeast Asia ( or Indochina ) and Maritime Southeast Asia ( or the similarly defined Malay Archipelago ) ( Indonesian : Nusantara ) . The Andaman and Nicobar Islands of India are geographically considered part of Southeast Asia .

These are the countries in Southeast Asia :

In total , 228 locomotives in the class were built by English Electric between 1957 and 1968 , the large number being in part because of the failure of other early designs in the same power range to provide reliable locomotives .

228 locomotives in the class were built by English Electric between 1957 and 1968 . The large number was partly to do with the failure of other early designs in the same power range , and reliable locomotives veing needed .

They are known by railway enthusiasts as `` Choppers '' , a name derived from the distinctive beat the engine produces under load which resembles the sound of a helicopter .

They are known by railway enthusiasts as `` Choppers '' , a name taken from the distinctive beat the engine produces under load which resembles the sound of a helicopter .

The British Rail ( BR ) Class 20 , otherwise known as an English Electric Type 1 , is a class of diesel-electric locomotive .

The British Rail Class 20 , also known as an English Electric Type 1 , is a class of diesel electric locomotive .

In 2007 , a new depot opened on Abbey Lane replacing the former premises on Abbey Park Road which go back to the company 's municipal heritage , and was originally a tram depot .

In 2007 , a new depot opened on Abbey Lane replacing the former premises on Abbey Park Road which go back to the company 's municipal heritage .

This site has now been demolished and is pending redevelopment .

This site is now derelict pending redevelopment as apartments .

It runs buses in the city of Leicester , England .

It runs buses in the city of Leicester England .

Mulberry Middle and Mulberry High round out the educational system in Mulberry .

Mulberry is a city of Florida in the United States .

A baseball glove or mitt is a large leather glove that baseball players on the defending team are allowed to wear to assist them in catching and fielding balls hit by a batter , or thrown by a teammate .

A baseball glove , or mitt , is a leather glove that baseball players use to catch a baseball that are hit by a batter or thrown by a fielder .

While catching in baseball had always been two handed , eventually , gloves grew to a size that made it easier to catch the ball in the webbing of the glove , and use the off-hand to keep it from falling out .

While catching in baseball was two handed , gloves grew to a size that made it easier to catch the ball in the webbing of the glove , and use the off-hand to keep it from falling out .

By the mid 1890s , it was the norm for players to wear gloves in the field .

Before the mid 1890s , baseball gloves were worn normally by baseball players .

A glove is typically worn on the non-dominant hand , leaving the dominant hand for throwing the ball ; for example , a right-handed player would wear a glove on the left hand .

A glove is worn on the non-dominant hand , leaving the dominant hand for throwing the ball ; for example , a right-handed player would wear a glove on the left hand .

The shape and size of the baseball glove is governed by official baseball rules ; Section 1.00 , Objectives of the Game , defines limits of catcher 's , first baseman 's and fielder 's glove in parts 1.12 , 1.13 and 1.14 .

The shape and size of the baseball glove is decided by official baseball rules ; Section 1.00 , Objectives of the Game , defines limits of catcher 's , first baseman 's and fielder 's glove in parts 1.12 , 1.13 and 1.14 .

By convention , the type of glove that fits on the left hand is called a `` right-handed '' or `` RH '' glove , although some websites and catalogs refer to them as `` Right-Hand Throw '' , which means a glove which is worn on the left hand .

By convention , the type of glove that fits on the left hand is called a `` right-handed '' or `` RH '' glove .

This design soon became the standard for baseball gloves .

This design soon became added to baseball gloves and webbed gloves were starting to be used by all baseball players .

My Sister 's Keeper is a 2004 novel written by New York Times Best Selling author Jodi Picoult .

My Sister 's Keeper is a 2004 novel written by Jodi Picoult .

It tells the story of 13-year-old Anna , who litigates her parents for medical emancipation when she is expected to donate a kidney to her sister Kate , who is dying from leukemia .

Set in Rhode Island , it tells the story of a 13-year-old girl named Anna Fitzgerald , a `` designer baby '' , who sues her parents so that they can no longer legally control her medical decisions once she learns expected to donate a kidney to her older sister Kate , who is dying from leukemia , cancer of the blood and bone marrow .

Anna was conceived in order to harvest blood from her umbilical cord to use in treatments to help save Kate 's life .

Once Anna is born , her umbilical chord blood was used in treatments for Kate to save her life .

Although the treatment was initially successful , Kate relapsed ; ever since , Anna , the only compatible family member , has been used as a donor for any other bodily substance needed to treat Kate , who continues to swing between remission and relapse as she grows up .

Although the treatment was initially successful , Kate relapsed ( became sick again ) . Since then , Anna had been used as a donor for any other bodily substance needed to treat Kate , who continues to swing between remission and relapse as she grows up .

The British East India Company built a ` factory ' ( warehouse ) at Armagaon ( Durgarazpatnam ) , a village around 35 m North of Pulicat , as the site in 1626 .

The British East India Company built a ` factory ' ( warehouse ) at Armagaon ( Durgarazpatnam ) , a village around 35 miles North of Pulicat , as the site in 1626 .

The next few decades were of rapid growth and expansion in the territories controlled by the British .

The next few decades were of rapid growth and expansion in the territories controlled by the English .

The simmering discontent in the various districts of the company territories exploded in 1857 into the Sepoy war .

The discontent in the various districts of the company territories exploded in 1857 into the Sepoy war .

With the decline of the three ancient dynasties during the 14th century , the Tamil country became part of the Vijayanagara Empire .

With the decline of the three ancient dynasties during the fourteenth century , the Tamil country became part of the Vijayanagara Empire .

The Madras Presidency , comprising most of southern India , was created in the 18th century and was ruled directly by the British East India Company .

The Madras Presidency comprising of most of southern India including what is now Tamil Nadu , was created in the eighteenth century and was ruled directly by the British East India Company .

The government also instituted a famine insurance grant , setting aside 1.5 million Rupees .

The government instituted a famine insurance grant , setting aside 1.5 million Rupees .

The 7th century Tamil Nadu saw the rise of the Pallavas under Mahendravarman I and his son Mamalla Narasimhavarman I. The Pallavas were not a recognized political power before the 2nd century .

The seventh century Tamil Nadu saw the rise of the Pallavas under Mahendravarman I and his son Mamalla Narasimhavarman I. The Pallavas were not a recognized political power before the second century .

These occupiers were overthrown by the resurgence of the Pandyas and the Pallavas , who restored the traditional kingdoms .

These occupiers were overthrown by the Pandyas and the Pallavas , who restored the kingdoms .

During the 3rd century BCE , the Deccan was part of the Mauryan kingdom , and from the middle of the 1st century BCE to 2nd century CE the same area was ruled by the Satavahana dynasty .

During the third century BCE , the Deccan was part of the Mauryan kingdom , and from the middle of the first century BCE to second century CE the same area was ruled by the Satavahana dynasty .

The names of the three dynasties , Cholas , Pandyas , and Cheras are mentioned in the Pillars of Ashoka ( inscribed 273 â `` 232 BCE ) inscriptions , among the kingdoms , which though not subject to Ashoka , were on friendly terms with him .

The names of the three dynasties , Cholas , Pandyas , and Keralaputras or Cheras are mentioned in the Pillars of Ashoka ( inscribed 273 -- 232 BCE ) inscriptions , where they are mentioned among the kingdoms , which though not subject to Ashoka , were on friendly terms with him .

The ancestor of modern humans ( Homo sapiens sapiens ) who appeared around 50,000 years ago was more developed and could make thinner flake tools and blade-like tools using a variety of stones .

The ancestor of modern humans ( Homo sapiens sapiens ) who appeared around 50,000 years ago was more developed and could fabricate thinner flake tools and blade-like tools using a variety of stones .

The Cholas , who re-emerged from obscurity in the 9th century by defeating the Pallavas and the Pandyas , rose to become a great power and extended their empire over the entire southern peninsula .

The Cholas , who came back from obscurity in the ninth century by defeating the Pallavas and the Pandyas , rose to become a great power and extended their empire over the entire southern peninsula .

The region of Tamil Nadu in modern India has been under continuous human habitation since prehistoric times , and the history of Tamil Nadu and the civilization of the Tamil people are among the oldest in the world .

The history of Tamil Nadu goes back to the early stone age . The region of Tamil Nadu ( now one of the states in the south of India ) has been under continuous human habitation since prehistoric times .

The Anglo-Mysore Wars of 1766 to 1799 and the Anglo-Maratha Wars of 1772 to 1818 put the Company in control of most of India .

The Anglo-Mysore Wars of 1766 to 1799 , the Anglo-Maratha Wars of 1772 andPolygar Wars of 1800-1805 Dheeran chinnamalai , the Tamil king won three polygar wars against Britishers and at last he was hanged along with his two brothers .

After some decades of expansion , the Pandyan Empire was large enough to pose a serious threat to the Pallava power .

After some decades of expansion , the Pandya kingdom was large enough to pose a serious threat to the Pallava power .

Around 850 , out of obscurity rose Vijayalaya , made use of an opportunity arising out of a conflict between Pandyas and Pallavas , captured Thanjavur and eventually established the imperial line of the medieval Cholas .

Around 850 rose Vijayalaya , made use of an opportunity arising out of a conflict between Pandyas and Pallavas , captured Thanjavur and eventually established the imperial line of the medieval Cholas .

During the Iron Age humans started using iron for making tools and weapons .

Humans started using iron for making tools and weapons .

The kingdom of the Cheras comprised the modern state of Kerala , along the western or Malabar Coast of southern India .

The kingdom of the Cheras comprised of the modern state of Kerala , along the western or Malabar Coast of southern India .

Invasion by the Kalabhras during the 3rd century disturbed the traditional order of the land by displacing the three ruling kingdoms .

Invasion by the Kalabhras during the third century disturbed the tradition , and order of the land by displacing the three traditional ruling dynasties .

His son Arikesari Parantaka Maravarman ( c. 650 â `` 700 ) had a long and prosperous rule .

His son Arikesari Parantaka Maravarman ( c. 650 - 700 ) had a long and prosperous rule .

Pandya Kadungon ( 560 â `` 590 ) is credited with the overthrow of the Kalabhras in the south .

Pandya Kadungon ( 560 - 590 ) is credited with the overthrow of the Kalabhras in the south .

Rapid changes in the political situation of the rest of India due to incursions of Muslim armies from the northwest marked a turning point in the history of Tamil Nadu .

Rapid changes in the political situation of the rest of India occurred due to the incursions of Muslim armies from the northwest marked a turning point in the history of Tamil Nadu .

Failure of the summer monsoons and administrative shortcomings of the Ryotwari system resulted in a severe famine in the Madras Presidency during 1876 â `` 1877 .

Failure of the summer monsoons and administrative shortcomings of the Ryotwari system resulted in a severe famine in the Madras Presidency during 1876 - 1877 .

The prehistoric period during which Palaeolithic settlements existed in the Tamil Nadu region has been estimated to span the period from about 500,000 BCE until around 3000 BCE .

The prehistoric period during which the Palaeolithic civilisations existed in the Tamil Nadu region has been estimated to span the period from about 50,000 BCE until around 3000 BCE .

The brief appearance of the Marathas gave way to the European trading companies , who began to appear during the 17th century and eventually assumed greater sway over the indigenous rulers of the land .

The brief appearance of the Marathas gave way to the European trading companies , who began to appear during the seventeenth century and eventually assumed greater sway over the indigenous rulers of the land .

Beck , Bogert & Appice was a hard rock supergroup power trio formed by guitarist Jeff Beck after two previous incarnations of The Jeff Beck Group , and bassist Tim Bogert and drummer Carmine Appice who were both previously in Vanilla Fudge and Cactus .

Beck , Bogert & Appice was a hard rock power trio formed by Jeff Beck , Tim Bogert , and Carmine Appice .

This process is called hematopoiesis .

This process is called hematopoiesis ( = blood growth ) .

A low normal to low absolute lymphocyte concentration is associated with increased rates of infection after surgery or trauma .

A low normal to low absolute lymphocyte count is found with infections after surgery or trauma .

Following maturation , the lymphocytes enter the circulation and peripheral lymphoid organs ( e.g. the spleen and lymph nodes ) where they survey for invading pathogens and\/or tumor cells .

After they mature , the lymphocytes enter the circulation and lymphoid organs ( e.g. the spleen and lymph nodes ) where they are able to sense invading pathogens and tumor cells .

Throughout the lifetime of an animal these memory cells will â rememberâ each specific pathogen encountered , and are able to mount a strong and rapid response if the pathogen is detected again .

Throughout the lifetime of an animal , these cells will ` remember ' each specific pathogen encountered , and are able to make a strong response if the pathogen is detected again .

The function of T cells and B cells is to recognize specific â non-self â antigens , during a process known as antigen presentation .

The function of T cells and B cells is to recognize foreign antigens .

The effects of other viruses or lymphocyte disorders can also often be estimated by counting the numbers of lymphocytes present in the blood .

The effects of other virus or lymphocyte disorders can also often be estimated by counting the numbers of lymphocytes present in the blood .

NK cells distinguish infected cells and tumors from normal and uninfected cells by recognizing changes of a surface molecule called MHC ( major histocompatibility complex ) class I. NK cells are activated in response to a family of cytokines called interferons .

Natural killer cells can tell the difference between infected cells , tumors , and normal cells . They recognize changes in the level of a surface molecule called MHC ( major histocompatibility complex ) class I.

One basis for low T cell lymphocytes occurs when the human immunodeficiency virus ( HIV ) infects and destroys T cells ( specifically , the CD4 + subgroup of T lymphocytes ) .

Human immunodeficiency virus ( HIV ) infects and destroys T cells .

NK cells are a part of innate immune system and play a major role in defending the host from both tumors and virally infected cells .

Natural killer ( NK ) cells are a part of the immune system a person is born with . They protect the organism from tumors and from cells infected by viruses .