HIV- blood test by HLA typing. Fluorescent light micrograph view of human white blood cells testing HIV negative, in a \Human Leucocyte Antigen\" (HLA

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HIV- blood test by HLA typing. Fluorescent light micrograph view of human white blood cells testing HIV negative, in a \Human Leucocyte Antigen\" (HLA) blood-typing test. HIV (Human Immunodeficiency Virus) is the virus which causes AIDS. Here, a patient's \"leucocyte\" white blood cells are coated on small glass beads. An HIV-negative result is obtained when cells on the beads fluoresce green. These are intact \"live\" cells representing no antibody-antigen being active, and no HIV antigen found in the patient's blood. The HLA test (called a complement-fixation test) can, when HIV positive, tell the severity of infection by the strength of the antibody-antigen reaction."

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Size: 5165px × 3573px
Photo credit: © SINCLAIR STAMMERS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: aids, antibodies, antigen, blood, clinical, haematology, healthcare, hematology, hiv, hla, hospital, leucocyte, leukocyte, light, medical, medicine, micrograph, test, testing, type, typing