Immunohistochemistry showed that within the testes,the CRES protein was expressed mainly in the cytoplasm of round spermatids and elongating sperma- tids,sperm acrosomes and residual bodies.

• 附睾中CRES蛋白主要表达于从附睾起始段到尾部的上皮主细胞的胞浆中，且以体、尾部表达最强，头部次之，管腔分泌物也呈阳性表达。