FIG 4.

Qualitative detection by ELISA using a monoclonal antibody to the hexon antigen of human adenovirus types of HAdV-5 suspensions on FBS, tap water, and wastewater that were untreated (0 kGy control) and treated with different doses of gamma radiation (1.8 kGy, 3.6 kGy, and 10.7 kGy). Bars represent the relative percentage to control HAdV-5 antibody binding. Error bars correspond to the standard errors about the mean values of three replicates (n = 3). *, negative result according to the manufacturer's instructions. Values with the same letter are not significantly different at a P value of <0.05.