7. How does the CD4 counting
act to monitor the HIV
infection? What is another
laboratory method to follow
up the disease?

Gap-fill exercise

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The CD4 counting test done from a
blood of a person infected
the HIV. In this the number of CD4
is counted. If that
(concentration) is abnormally low
means immunodeficiency and the
usually must be treated
antiretroviral drugs. The other used
to follow up infection is the viral
test. In this test number of HIV
virus estimated from a blood
indicating whether the treatment
() of the disease has
successful or not.