B cell progenitors and subsets in the bone marrow (top row), spleen (middle row), and other lymphoid organs (bottom row) were ... B cells residing within lymphoid tissues, including splenic FO B cells, Peyers patch mature B cells, lymph node B cells, and ... Intravascular access of B cells is required for efficient B cell depletion. A, Mobilization of MZ B cells enhances their ... Finally, the composition of the residual B cell compartment following B cell depletion and sensitivity of GC B cells to anti- ...