Fig. 3From: Human adenovirus type 7 infection causes a more severe disease than type 3Activation of complement C3a by HAdVs. Normal human serum (NHS) (1:20 dilution) was incubated at 37 °C alone or with purified HAdVs for 2, 4, or 10 min. Samples were analyzed by ELISA for levels of C3a. n = 3, **, P < 0.01, ***, P < 0.001, NHS + HAdVs infection group compared with NHS alone group. #, P < 0.05, NHS + HAdV-7 group compared with NHS + HAdV-3 groupBack to article page