the results showed that lps , dxs , and the combination of lps and dxs stimulate 1 in 27 , less than 1 in 500 and 1 in 15 nucleated spleen cells of balb/c mice to proliferation and differentiation into a clone of ig-secreting cells , respectively , indicating that these mitogens have a synergistic effect on b cells at the precursor cell level .
C0007634
cells
C0018956
precursor cell