Transmission electron micrograph showing particles (virions) of a virus that is the causative agent of AIDS (Acquired Immune Deficiency Syndrome). AIDS virions (designated HIV - Human Immuno-- deficiency Virus) appear here as roughly circular bodies with a darker interior region. HIV destroys T-lymphocyte cells,key components of the immune system,which are responsible for stimulating the antibody-producing B-lymphocytes. The body's defence system is undermined & prey to opportunistic infections,notably pneumonia & Kaposi's sarcoma. Tranmission of virus occurs by sexual contact & through contaminated blood & blood products (eg. Factor VIII) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CDC |
Taille de l’image : | 5150 px × 3460 px |
Model Release : | Non requis |
Property Release : | Non requis |
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