using a lipopolysaccharide ( lps ) -driven limiting dilution analysis system , the precursor frequency ( pf ) of cells secreting igm and igg and sheep erythrocyte ( srbc ) -specific igm and igg was established for highly purified srbc antigen-binding cell ( srbc-abc ) and unfractionated populations taken from cba/j mouse spleens on days 5 , 12 and 180 of the in vivo primary immune response to srbc .
C1327616
secreting
C0007634
cell