IN VITRO STIMULATION OF ANTIBODY FORMATION BY PERITONEAL CELLS

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Abstract
An improved method for the short-term culture of mouse peritoneal cells in a medium containing carboxymethylcellulose (CMC), sheep erythrocytes (SRBC), and guinea pig complement is described. It involves preparation of microcultures, of thickness 12–15 µ and volume 3.6 µl, under paraffin oil. With such cultures, peritoneal cells from normal, unimmunized young male CBA mice give about 3000 hemolytic plaques per million cells cultured, this figure being attained within 24 hr. The plaque detection method is about four times as sensitive as the Jerne technique.