U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 close



Research
                Research Home
                            National Programs
                            Research Projects
                            Scientific Manuscripts
                            International Engagement
                            Scientific Software/Models
                            Databases and Datasets
                            Office of Scientific Quality Review
            Media
                News & Features
                            Multimedia
                            Briefing Room
                            Down on the Farm
                            Press Room
                            Science in Your Shopping Cart
                            Scientific Discoveries
                            Tellus
                            Under the Microscope
            About ARS
                About ARS Home
                            Staff Directory
                            Labs and Research Centers (Map)
                            Headquarter Offices
                            Organizational Chart
                            Employee Services (REE Employees Only)
                            Office of Outreach, Diversity, and Equal Opportunity
            Work With Us
                Work With Us Home
                            ARS Vacancies at USAJOBS
                            Careers at ARS Information
                            Scientific Collaborations
                            Extramural Agreements
                            1890 Faculty Research Sabbatical ProgramSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Dubey, Jitenderitem
                                            SREEKUMAR, CHIRUKANDOTH - USDA, ARS, APDL
  Submitted to: International Journal for Parasitology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 6/21/2003
                                    Publication  Date: 6/20/2003
                                    Citation: Dubey, J.P., Sreekumar, C. 2003. Redescription of hammondia hammondi and its differentiation from toxoplasma gondii. International Journal for Parasitology 33:1436-1453.Interpretive Summary: Hammondia hammondi and Toxoplasma gondii are two single-celled similar parasites of livestock.  Toxoplasma gondii causes abortions in livestock and mental retardation in children.  

Scientists at the Beltsville Agriculture Research Center have described criteria to distinguish these parasites.  These results will be of interest to biologists, parasitologists, veterinarians and public health workers.
                                Technical Abstract: Hammondia hammondi is a protozoan parasite that, until 1975, was misidentified as Toxoplasma gondii.  Recently, the validity of H. hammondi has been questioned.  In this article, the authors redescribe the parasite and its life cycle, provide accession numbers to its specimens deposited in a museum, and distinguish it structurally and biologically from T. gondii. H. hammondi was found to be structurally, biologically, and molecularly different from T. gondii.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov