Bruton's tyrosine kinase is essential for the creation of these cells. Follicular dendritic cells are sonamed because they were first discovered in follicles of these cells. These cells express CD19 and CD20.These cells present antigens bound to a class II MHC. Somatic hypermutation and V(D)J recombination ofheavy and kappa or lambda chains occurs in them. The humoral branch of adaptive immunity is mediatedby them. These cells produce antibodies. For 10 points, identify this lymphocyte that is produced andmatures in the bone marrow, unlike the lymphocytes which mature 
Bruton's tyrosine kinase is essential for the creation of these cells. Follicular dendritic cells are sonamed because they were first discovered in follicles of these cells. These cells express CD19 and CD20.These cells present antigens bound to a class II MHC. Somatic hypermutation and V(D)J recombination ofheavy and kappa or lambda chains occurs in them. The humoral branch of adaptive immunity is mediatedby them. These cells produce antibodies. For 10 points, identify this lymphocyte that is produced andmatures in the bone marrow, unlike the lymphocytes which mature in the thymus, T cells.
Bruton's tyrosine kinase is essential for the creation of these cells.
B cells [or B lymphocytes]