Possible points for measuring the heart rate are: 1  The ventral aspect of the wrist on the side of the thumb (radial artery). 2  The ulnar artery. 3  The neck (carotid artery). 4  The inside of the elbow, or under the biceps muscle (brachial artery). 5  The groin (femoral artery). 6  Behind the medial malleolus on the feet (posterior tibial artery).
HIV is a member of the genus Lentivirus, part of the family Retroviridae. Lentiviruses have many morphologies and biological properties in common. Many species are infected by lentiviruses, which are characteristically responsible for long-duration illnesses with a long incubation period.
simian immunodeficiency virus (SIV) a lentivirus closely related to human immunodeficiency virus that causes inapparent infection in African green monkeys and a disease resembling acquired immunodeficiency syndrome in macaques and chimpanzees.uman immunodeficiency virus (HIV). A transmissible retrovirus that causes AIDS in humans. Two forms of HIV are now recognized: HIV-1, which causes most cases of AIDS in Europe, North and South America, and most parts of Africa; and HIV-2, which is chiefly found in West African patients.