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What is CD4 and how do doctors use it to determine HIV progression?
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What is CD4 and how do doctors use it to determine HIV progression?

User ShAkKiR
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A CD4 count is a test that measures the number of CD4 cells in your blood. CD4 cells, also known as T cells, are white blood cells that fight infection and play an important role in your immune system.
User Ferroao
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A CD4 count is typically reported as a count of cells. A CD4 count is used to check the health of the immune system in people infected with HIV. HIV attacks and destroys CD4 cells.

Step-by-step explanation:

User Redox
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