whereas protein synthesis and membrane permeability were affected by the viruses , and virus antigens detectable by pooled human serum were synthesized , the bacterial toxin and cytotoxic csf did not induce any new proteins or antigens , although the cytotoxic csf reduced cellular protein synthesis levels and caused an increase in the permeability of the cell membranes .
C0003342
virus antigens
C0003320
antigens