in mice given multiple injections of sheep red blood cells ( srbc ) for four weeks the production of bone marrow lymphocytes was augmented , as indicated by increased numbers of cytoplasmic mu-chain-bearing pre-b cells and of surface mu-chain-bearing b lymphocytes , as well as increased rates of pre-b cell proliferation and small lymphocyte turnover .
C0004561
b
C1292769
pre-b