FIG. 3.

Reactivity of paired autologous seminal fluid (broken line) and serum (top panels) or saliva (bottom panels) (solid line) IgG antibodies with surface antigens from S. pyogenes, determined as described in the legend to Fig. 1. IgG was purified from subjects 6 and 7. In addition to common peaks shared by the serum and semen patterns, some antigens were detected only by semen IgG (subject 6) or only by serum IgG (subject 7). The patterns of saliva and semen IgG seemed to be unrelated.