[DOC] [TLE] Karl Landsteiner discovered the four blood groups - Healio [PAR] Amidst the grim backdrop of a war-torn Vienna, Karl Landsteiner's scientific 
explorations in ... During this time, Landsteiner published many journal articles 
with these ... conclusions led to the identification of the four blood groups: A, B, O, 
and AB. ... he and other scientists were able to connect poliomyelitis to a viral 
cause. [DOC] [TLE] Karl Landsteiner - Biographical - Nobelprize.org [PAR] Karl Landsteiner was born in Vienna on June 14, 1868. ... in 1909, he classified 
the bloods of human beings into the now well-known A, B, AB, and O groups and
... [DOC] [TLE] Blood Groups, Blood Typing and Blood Transfusions - Nobelprize.org [PAR] Dec 3, 2001 ... Karl Landsteiner discovered that blood clumping was an ... Individuals have 
different types and combinations of these ... According to the AB0 blood group 
system there are four different kinds of blood groups: A, B, AB or 0... [DOC] [TLE] Human Blood: ABO Blood Types [PAR] photo of Karl Landsteiner working in his laboratory ... They were discovered in 
1900 and 1901 at the University of Vienna by Karl Landsteiner ... There are four 
principal types: A, B, AB, and O. There are two antigens and two ... The specific 
combination of these four components determines an individual's type in most 
cases. [DOC] [TLE] Landsteiner, Karl - Science Heroes [PAR] No one knew that there were four different types of blood (A, B, AB, and O) and 
that if you gave ... In 1901, Landsteiner discovered that different people's blood 
had different characteristics ... Today, we refer to these as the blood group 
antigens. [DOC] [TLE] Karl Landsteiner - Wikipedia [PAR] Karl Landsteiner, ForMemRS (June 14, 1868  June 26, 1943), was an Austrian 
biologist and physician. He is noted for having distinguished the main blood 
groups in 1900, having ... As a result, he succeeded in identifying the three blood 
groups A, B and O, which he ... He arrived there with his family in the spring of 
1923. [DOC] [TLE] ABO blood group system - Wikipedia [PAR] The ABO blood group system is widely credited to have been discovered by the 
Austrian scientist Karl Landsteiner, who identified the O, A, and B blood types in... [DOC] [TLE] Karl Landsteiner - Biography, Facts and Pictures - Famous Scientists [PAR] Karl Landsteiner an Austrian-born American immunologist, physician and 
pathologist. He was awarded the Nobel Prize in 1930 for Physiology or Medicine 
for. ... in 1901 that there were three major human blood groups: A, B and C (
which was later called O). ... three fellow scientists discovered a fourth blood type 
named AB. [DOC] [TLE] Karl landsteiner and his major contributions to haematology ... [PAR] May 16, 2003 ... Karl Landsteiner discovered human blood groups in 1900 and laid the 
foundation for ... who have blood group O than in those with blood group A, B or 
AB (Souto et al, 2000). ... He found that none of the sera reacted with their own 
red cells but Dr ... The four blood groups were well established by 1902 and... [DOC] [TLE] The history of blood types | Big Picture [PAR] Blood typing is necessary for safe blood transfusions, where donor blood is given 
to ... type O negative) to 100 per cent (if you have the 'universal' recipient type, AB 
positive). ... human blood types that we know today was an Austrian, Karl 
Landsteiner. ... Landsteiner discovered the common blood types A, B and O (
which he... [DOC] [TLE] Who came up with blood types and what do they mean? | The Dish ... [PAR] Jan 29, 2016 ... While we take them for granted today, they were once considered not ... Austrian 
physician Karl Landsteiner took samples of blood from six ... By understanding 
the difference between blood groups A, B, O, and AB ... of these factors and why 
they evolved, their discovery revolutionized modern medicine. [DOC] [TLE] A Brief History of Human

Question: Karl Landsteiner discovered there were 4 of these: A, B, O & AB
Answer: blood types