Journal of Experimental Medicine, Vol 148, 1612-1619, Copyright © 1978 by Rockefeller University Press
B-cell precursors specific to sheep erythrocytes. Estimation of frequency in a specific helper assay
MH Schreier
A sensitive, specific, and reproducible in vitro helper assay is described
which is suited to limiting dilution analysis of murine B cells. 1 in about
3,000 syngeneic splenic B cells can be induced to form plaque-forming cells
(PFC) to sheep erythrocytes in this system. The induction of PFC is
absolutely dependent on antigen and specific helper T cells.