A B Cell's Sensitivity to Antigen Can Be Increased 1000-10,0000-Fold

Multiple Choice

A B cell's sensitivity to antigen can be increased 1000-10,0000-fold by

A) simultaneously ligating the B-cell receptor and co-receptor
B) simultaneously ligating the B-cell receptor and Toll-like receptor
C) ligating the B-cell co-receptor and phosphorylating Ig-α ITAMs
D) increasing levels of Syk proteins in the vicinity of co-receptor ligation
E) ligating cytokine receptors on the B-cell surface.