无斑肥螈皮肤的组织学观察

本文报导了无斑肥螈（Pachytriton labiatus）皮肤的显微结构和特点。其皮肤的基本结构与其他有尾两栖类相似，体背、腹部位的皮肤厚度和结构有一定差异，皮肤中有丰富的微血管，在表皮和真皮相接处分布密集，背部分布密度明显大于腹部。皮肤腺体较少，缺乏色素细胞，角质化程度较低，表皮细胞层数少，界限不清。表皮下的毛细血管常向表皮突起，突起处表皮细胞层数减少，形成皮肤的血气呼吸屏障，以保证皮肤有效的呼吸作用的完成。

Histological Observation on Skin of Pachytriton labiatus

This article reports the microstructure and the character of skin of Pachytriton labiatus.The basic structure of skin is similar to other urodels.Microstructural features of skin near dorsom and venteral are specially described here.On dorsom and venteral,skin's tkickness and microstructure are different.The skin is rough low-keritinization.The capillary vessels are abundant beneath epidermis and move outside to make the epidermis thinner somewhere.This structure forms a thinner oxygen-blood barrier for effective respiration of skin in this lungless salamander.