The CD4 molecule is a cell-surface protein that serves as a receptor for the HIV virus, allowing it to infect cells, particularly T-helper cells. It is not an HIV surface glycoprotein; rather, it is found on the surface of certain immune cells, including T-helper cells, but not exclusively on them.

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The CD4 Molecule Is

Question 12

Multiple Choice

The CD4 molecule is

A) an HIV surface glycoprotein.
B) a cell-surface protein that allows HIV to infect a cell.
C) found only on T-helper cells.
D) an HIV surface glycoprotein that is found only on T-helper cells.

Correct Answer: