ANTONIA REEVE / SCIENCE PHOTO LIBRARY ANTONIA REEVE / SCIENCE PHOTO LIBRARY
AIDS blood test. Gloved hands placing a multi-well sample tray containing AIDS patients' blood into a machine for testing. The test will determine whether the blood contains antibodies to HIV (human immunodeficiency virus), the virus which causes AIDS (acquired immune deficiency syndrome). An added reagent effects a colour change if such antibodies are present.
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