Surface-specific characteristics of a contact-inhibited cell line containing the SV40 viral genome

A cytoagglutinin purified from wheat germ lipase agglutinated five related murine fibroblast cell lines in the order of their saturation densities. One cell line, which was transformed by the oncogenic papova virus SV40 but which had a low saturation density, agglutinated poorly. Preincubation of cells with trypsin increased their agglutinability, but trypsin made no cell line more agglutinable than the cell line with the highest saturation density.