Along the cerebral aqueduct there were longitudinal parallel cristae,which was lined by simple cuboidal or columnar epithelium.

• 发现中脑水管壁具有平行走向的纵嵴,腔面被覆单层立方或柱状上皮;上皮细胞游离面可见大量纤毛、微绒毛及分泌泡;