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.
Can you explain AIDS and how it affects the immune system? How does HIV become AIDS? HIV INFECTION begins with a sharp rise of virus in the blood (orange line) and a consequent drop in CD4 T cells (blue line). The immune system soon recovers somewhat, however, and keeps HIV levels fairly steady for several years. Eventually, though, the virus gains the upper hand. AIDS is diagnosed when the CD4 T cell level drops below 200 cells per cubic millimeter of blood or when opportunistic infections arise.