Answer:
B cells respond to the initial antigen challenge by producing Progeny cells which are Plasma cells and Memory cells
Explanation:
When a B-cell encounter an antigen, It binds to the B-cell antigen receptor which delivers the antigen to intracellular sites where it is degraded and returned to the B-cell surface as peptides bound to MHC class II molecules.
The peptide: MHC class II complex can be recognized by antigen-specific armed helper T cells, stimulating them to make proteins that, in turn, cause the B cell to proliferate and its progeny to differentiate into antibody-secreting cell. After several rounds of proliferation, B cells can further differentiate into antibody-secreting plasma cells. The germinal B cell can either differentiate as plasma cell which produces antibody or as memory B cell which acts as the memory for further infection.
