When a naive B cell Leᵃves the bone marrow,it has membrane-bound ________ antibody.
A)IgA and IgE
B)IgA and IgM
C)IgD and IgE
D)IgD and IgM

Question

Quizplus · Accepted Answer

Naive B cells leaving the bone marrow have membrane-bound IgD and IgM antibodies. These antibodies serve as the B cell receptor (BCR) for antigen recognition. The B cell can differentiate into plasma cells and start producing secreted antibody upon encountering an antigen that binds to its BCR. IgA and IgE are produced by B cells in other tissues after activation and differentiation.

When a Naive B Cell Leᵃves the Bone Marrow,it Has