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Question

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Draw a sketch of action of HIV in the body.

Solution

Action of HTV in the body.
The virus enters the host body and invades the macrophages where its RNA genome replicates with the help of revese transcriptase enzyme to form viral DNA. The DNA is incorporated into the host genome and so it compells the macrophages to continue producing virus particles. The viruse salso enters T-helper cells and produce viruses. The viruses formed attack more and more T-helper cells and results in the decrease in their number.

Action of HIV in the body .

Some More Questions From Human Health and Disease Chapter

Write the causative agent of (i) amoebiasis and (ii) ascariasis.

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What is the protein produced by B-cells called?

Which type of immune response does T-cells mediate?

Name the two types of T-cells ?

Name the type of immunity mediated by antibodies.

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