小熊猫唾液腺的研究

Study on the Salivary Gland of the Red Pandas

小熊猫的腮腺只有浆液性腺泡 ,颌下腺和舌下腺都有浆液性腺泡、粘液性腺泡和混合性腺泡 3种 ,但颌下腺主要是混合性腺泡 ,舌下腺主要是浆液性腺泡 .腮腺的闰管短 ,分泌管长 ,颌下腺的闰管和分泌管都长 ,舌下腺的闰管和分泌管都短 .浆液性腺细胞和粘液性腺细胞都含有中性粘液物质和酸性粘液物质 .腺泡的发育先于导管 ,粘液性腺细胞的发育先于浆液性腺细胞 .并与大熊猫的唾液腺的组织结构进行了比较研究 .

The red panda's parotid gland has only serous alveoli, but three types of alveoli , the serous alveoli , the mucous alveoli and the mixed alveoli,have been found respectively in its submaxillary gland and hypoglossal gland.There are more serous alveoli than other two types of alveoli in the hypoglossal gland, more mixed alveoli in the submaxillary gland. The short intercalated duct and the long secretory duct have been found in the parotid gland,the long intercalated duct and secretory duct in submaxillary gland , the short intercalated duct and secretory duct in hypoglossal gland . Both serous cells and mucous cells contain neutral and acid mucous substance . The alveoli develop earlier than the duct , the mucous cells earlier than the serous cells. The microstructure of the red panda has been compared with that in the giant panda.