AIDS viruses. Computer illustration of human immunodeficiency viruses (HIV). HIV causes AIDS (acquired immune deficiency syndrome) by infecting T-lymphocyte white blood cells (T-cells) of the immune system. The virus' genetic material (light green) is in the form of RNA (ribonucleic acid). It is wrapped in a capsid (protein coat,pink) and envelope (purple). The envelope is studded with surface proteins (mid green) that allow HIV to grab onto and enter the T-cells. HIV then instru- cts them to make more viruses which bud away from the cells,ultimately killing them. With fewer T- cells,the patient becomes vulnerable to formerly harmless infections,a condition known as AIDS | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Camazine, Scott |
Taille de l’image : | 4479 px × 3176 px |
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