using methods which permitted simultaneous detection of cytoplasmic igm , the presence of the cr , and 3h-thymidine uptake we found that : a ) lps stimulation resulted in a progressive increase in the number of igm+ blasts , b ) these constituted approximately 30 % of the total cell population at 72 hr after lps stimulation , c ) of the igm+ blasts 72 to 84 % were cr+ and 16 to 28 % were cr- at 72 hr , d ) from 48 to 72 hr there was no decrease in the percentage of igm+ blasts possessing the cr , and e ) an additional blast cell type was observed which incorporated 3h-thymidine but which was igm- and lacked the cr .
C0010834
cytoplasmic
C0007634
cell