Figure 6.

Effects of PS-NH₂ exposure on Mytilus galloprovincialis hemolymph bactericidal activity. In vitro bactericidal activity toward Vibrio aestuarianus 01/032 of whole hemolymph samples from control (dotted line) and PS-NH₂-exposed mussels (black line), (A) after Expo1 and (B) after Expo2. Hemolymph was incubated with V. aestuarianus for 60 and 90 min as described in section Materials and Methods. Percentages of killing were determined in comparison to values obtained at zero time. Data, expressed as percent values with each respective control group, are the mean ± SD of four experiments (*P < 0.05) (Mann–Whitney's U test).