中国水牛(Bubalus bubalis)鼻唇镜的研究 Ⅲ.鼻唇腺的组织化学

在研究中国水牛鼻唇腺显微与亚微结构的基础上,对水牛鼻唇腺的组织化学(核酸、多糖、糖蛋白、脂类,碱性磷酸酶和酸性磷酸酶等)进行测定。显微镜观察表明,鼻唇腺腺泡细胞胞质与导管管腔内的分泌物均含较多的 PAS 阳性颗粒。用不同 pH 的 AB 染色加以鉴别,证实这些 PAS阳性颗粒属于涎粘液,是分泌物的重要成分。鼻唇腺是一种由纯浆液性腺泡构成的唾液腺,其分泌物通过导符系统运送到鼻唇镜表面,水牛不断用舌舔其表面,从而咽入腺体分泌物。

THE STUDY ON THE PLANUM NASOLABILE OF BUBALUS BUBALIS Ⅲ.The Histochemical Study of the Nasolabial Gland.

On the basis of the study of histological structure and ultrast- ructure of the nasolabial gland of Bubalus bubalis,the present investigation examines the histochemical localization of DNA and RNA,polysaccharide, glycoprotein,protein,lipid,acid phosphatase and alkaline phosphatase in the nasolabial gland of Bubalus bubalis.The cytoplasm of the acinar cells and luminar secretion of the nasolabial gland contain many PAS-positive granules--salivary mucus,a kind of the glycoprotein,which is an important substances of the secretion.According to the histological feature,ultrastruc- ture and histochemical reactions,the nasolabial gland is a salivary gland com- posed of pure serous acinar cells.Under normal conditions,the secretion pas- sing through the system of excretory ducts reaches to the surface of the pla- hum nasolabile.By licking the planum nasolabile on the surface,the animal swallows the secretion into the rumen.However,it remains to be proved by further experiments,if the secretion contains the functions of digistive and immunuty.