Transmission electron micrograph (TEM) of the human immunodeficiency virus (HIV). HIV is responsible for AIDS (Acquired Immunodeficiency Syndrome ). HIV is a retrovirus of the lentivirus kind. It realizes a long incubation period, with a slow disease evolution. AIDS is contagious by sexual or blood way, and often provokes a mortal collapse of the immune system. Viral magnification 690,000 X at 10 cm and image colorization with HDRI treatments. Viral diameter approximately: 145 nm