(a)
(b)
Figure 7: Immunohistochemical staining of GnRH receptor expression in PC-3 and SKBR-3 xenografted tumors: (a) the PC-3 xenografted tumor exhibited strong brown cytoplasmic staining and the SKBR-3 xenografted tumor exhibited weak brown cytoplasmic staining; (b) the PC-3 and SKBR-3 xenografted tumors were stained without primary goat antihuman GnRH antibody (×400).