Which one of the following B cell responses is NOT stimulated by CD40 ligand?

Question

Quizplus · Accepted Answer

CD40 ligand binding to B cell CD40 enhances production of secreted, not membrane, Ig. CD40 signaling involves recruitment of signaling intermediates, called tumor necrosis factor-receptor associated factors (TRAFs), to the cytoplasmic tails of CD40 and the downstream activation of NF-ĸB, as well as other transcription factors. The signaling cascades result in increased expression of various genes, including B7 costimulators, and increased Ig isotype switching, which is mediated by switch recombinases.

Which One of the Following B Cell Responses Is NOT