AN OBSERVATION ON THE ULTRASTRUCTURE AND MORPHOLOGY OF KERATOHYALIN GRANULES DURING KERATINIZATION OF SHEEP ORAL EPITHELIUM
- VernacularTitle:绵羊口腔上皮角化过程中透明角质颗粒的超微结构观察
- Author:
Shiping WANG
- Publication Type:Journal Article
- Keywords:
Oral epithelium;
Keratohyalin granules;
Sheep;
Keratinization;
Ultrastructure
- From:
Acta Anatomica Sinica
1955;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Tissue samples from sheep oral epithelium of different age groups were fixed with three different fixatives to observe the ultrastructure of keratohyalin granules. Two conclusions were: 1. There were two types of keratohyalin granules in the sheep oral epithelium. The morphology and ultrastructure of type Ⅰ granules underwent alteration during epithelial development. The shape of granules changed from round to irregular by the combination with tonofilament bundles. Finally, the granules disappeared from several sites of mature oral epithelium. Type Ⅱ granules were round or oval in shape and were surrounded by free ribosomes. They did not have morphologic or ultrastructural changes during epithelial development. They appeared in immature oral epithelium, and constantly presented in mature epithelium. 2. According to the reaction of the two types of granules with the fixatives, it is suggested that the composition of type Ⅰ granules has the property of lipoprotein and the component of type Ⅱ granules possesses the nature of unsaturated lipid in addition to the lipoprotein.
