Examlex
Which of the following statements is TRUE for the U.S.?
CD4 Count
A measure of the number of CD4+ T lymphocytes in the blood, an important indicator of immune system health, especially in the context of HIV/AIDS.
Helper T Cells
A type of T cell that plays an important role in the immune system by activating and directing other immune cells.
Cubic Millimeter
A unit of volume in the metric system equal to one millionth of a liter, often used in scientific measurements of very small quantities.
Retroviruses
A type of virus that inserts a copy of its RNA genome into the DNA of the host cell it infects, leading to the possibility of lifelong infection, such as HIV.
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