CD79A and atherosclerosis: In the present study, a significant negative association between the plaque area and plasma IgA to Rgp44 was demonstrated, providing further evidence that IgA antibodies may play an important role in atherogenesis and indicating that the immunization with Rgp44 may exert a protective effect via regulation of plasma IgA antibody levels against the protease secreted by Pg. Plasma IgA levels to PCho were considerably elevated in Rgp44-immunized mice; however, they were not found to be associated with the size of atherosclerosis lipid deposits.