A nonfunctional CD4 protein on a helper T cell would result in the helper T cell being unable to ________.
A) respond to circulating viral antigens
B) lyse tumor cells
C) stimulate a cytotoxic T cell
D) interact with a class II MHC-antigen complex

Question

Quizplus · Accepted Answer

The CD4 protein on helper T cells is crucial for their interaction with class II MHC-antigen complexes presented by antigen-presenting cells. Without functional CD4, the helper T cell cannot properly engage with these complexes, impairing its activation and subsequent immune functions.

A Nonfunctional CD4 Protein on a Helper T Cell Would