Among cosmetic surgeries, Botox is the most common plastic surgery. Botox involves injecting of a toxin called âbotulinumâ in the epidermis of the skin to get rid of the wrinkles arising out of old age.
Human immunodeficiency virus (HIV) is a virus that causes the condition acquired immunodeficiency syndrome (AIDS). The virus attacks a specific type of immune system cell in the body, known as CD4 helper lymphocyte cells. HIV destroys these cells, making it harder for your body to fight off other infections.
HIV/AIDS. Human immunodeficiency virus (HIV) infection (HIV) occurs when the virus invades cells in the immune system and uses them to make more HIV cells. HIV is a retrovirus, meaning it needs host cells to replicate. The host cells it uses are CD4, or helper T, cells, which initiate the bodyâs response to infection.