Fig. 4: Increased mRNA and protein expression levels of Vegf and Vegfr2.

a Immunohistochemistry staining showed high expression of VEGFR2 in antral follicles of Tx group compared to the NTx group. b Protein levels were also upregulated in most of the Tx groups compared to the NTx groups. c mRNA expression levels of VEGF and VEGFR2 were increased in the 2- and 3-week Tx groups. d Immunofluorescence showed high expression of VEGFR2 in blood vessel epithelial cells in the ovaries. V, blood vessel. Scale bar: 25 μm. *vs. the normal group (P < 0.05). # vs. the NTx group (P < 0.05). Nor normal group, NTx non-transplantation group, Tx transplantation group.