Figure 2From: Antibodies to group A streptococcal virulence factors, SIC and DRS, increase predilection to GAS pyodermaCompetitive ELISAs. Sera samples positive to SIC only, DRS only or to SIC + DRS were pre-incubated with homologous, heterologous or both competitor antigens at 0 μg, 10 μg and 50 μg prior to incubation with SIC (Panel A) or DRS (Panel B) coated plates for ELISA.Back to article page