Fig. 4From: Assessments of different inactivating reagents in formulating transmissible gastroenteritis virus vaccineThe proliferation result of spleen lymphocyte by MTT assay. Spleens of three mice in each group were collected at 14, 21 and 35 dpi, respectively (n = 3). Lymphocytes were obtained and stimulated with inactivated TGEV antigen at 37 °C for 24 h. Con A was used as the positive control, and the DMEM was used as the negative control. Bars represent the mean (± standard deviation) of three replicates per treatment in one experiment. Statistical significance was indicated by ***P < 0.001(extremely significant) compared with the negative control groupBack to article page