Fig. 3

P53 protein expression in each group (× 400). a Blank control group: the microscopic images showed that the negative cells were blue, the substrate was white, and the positive cells were yellow or brownish yellow (indicated by black arrows). P53-positive products were mainly distributed in the nucleus, cytoplasm, and intercellular substances. The positive products in the blank control group expressed less. b Model control group: the microscopic images showed that the negative cells were blue, the substrate was white, and the positive cells were yellow or brownish yellow (indicated by black arrows). P53-positive products were mainly distributed in the nucleus, cytoplasm, and intercellular substances. The expression of positive products in the model control group was higher than that in the blank control group. c Prednisone group: the microscopic images showed that negative cells were blue, substrate was white, positive cells were yellow or brownish yellow (indicated by black arrows), and P53-positive products were mainly distributed in nucleus, cytoplasm, and intercellular substance. The positive products in the prednisone group were less than those in the model control group