Man : Reckless Life (HIV/AIDS)
HIV/AIDS Human immunodeficiency virus ( HIV ) is a lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (AIDS), a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive. i. HIV infects vital cells in the human immune system such as helper T cells (specifically CD4 + T cells), macrophages , and dendritic cells . ii. HIV infection leads to low levels of CD4 + T cells through three main mechanisms: a. First, direct viral killing of infected cells; b. second, increased rates of apoptosis in infected cells; and c. killin...