A Cell That Expresses Both IgM and IgD on the Cell

Question

A cell that expresses both IgM and IgD on the cell surface is a
A)B-1 cell
B)Naïve mature B cell
C)Centrocyte
D)Memory B cell
E)Plasma cell

Accepted Answer

Both IgD and IgM are expressed on mature B cells when exiting the bone marrow. The IgD expression is lost when the B cell begins development in the germinal center.