Fig. 3From: Effect of fetal calf serum on propagation of duck hepatitis A virus genotype 3 in duck embryo fibroblast cellsEffect of FCS and CS on DHAV-3 replication in DEF cells. (a) and (b) represent the effect of FCS on C-GY and YDF120 at different concentrations respectively. (c) and (d) represent the effect of CS on C-GY and YDF120 at different concentrations respectively. At each concentration, samples (medium and cells) were collected from three wells of 24-well-plates and viral load in each sample was quantified by qPCR. Error bars represent the SD (n = 3). *, P < 0.05. **, P < 0.01Back to article page