Growth of Primary Plasmacytomas in the Mineral Oil-Conditioned Peritoneal Environment2

Abstract
Ascites cells from 15 primary BALB/c plasmacytomas were transplanted intraperitoneally into normal or mineral oil-treated BALB/c mice; 15 of the tumors grew within 57 days in the mineral oil. treated mice. Within the same period only 3 of the tumors grew in normal mice.