Abstract
Summary Liquid cultures of several mycoplasma strains were harvested and packed cells subjected to fractionation procedures. Recovery of fractions from alkaline hydrolysis yielded small quantities of material capable of modifying erythrocytes for specific agglutination in homologous PPLO antiserum. Fractions capable of sensitizing erythrocytes were also active in adsorbing specific PPLO antibody reacting in an inmmunofluorescent test. Hemagglutinin titers of PPLO antisera were compared to agglutinin and indirect fluorescent antibody titers.