HISTOGENESIS OF LINGUAL EPITHELIUM IN PRENATAL SURTI GOAT (Capra hircus)
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 58
Abstract
The present study was carried out with aim to study histological structure of lingual epithelium in fetuses of Surti goat. For the present investigation, a total 41 apparently normal Surti goat fetuses were procured and categorized broadly into three groups based on Crown-rump length (CR length).The tissue samples were collected from root, body and apex of tongue and were processed. The tissue sections were stained with Mayer's Haematoxylin and Eosin for general histological and micrometrical observations. From 6.6 cm CR length (45 days) to 10 cm CR length (59 days), the tongue was lined by two layers of epithelium; a deep layer of cuboidal cells and a superficial thin sheet of cells over the epithelium during initial stages of development. From 11.10 cm CR length (62 days) to 12.70 cm CR length (65 days), the dorsal surface of the tongue was lined by three layered epithelium, basal layer of cuboidal cells, middle layer of squamous cells and superficial layer of flattened cells. From 31.5 cm CR length (119 days) onwards epithelium of dorsal surface revealed a slight degree of keratinization which was well-developed like adult from 36 cm CR length (131 days). The ventral surface of apex was lined by a single layer of cuboidal or low columnar type of cells with no keratinisation up to 12.7 cm CR length (65 days). From 13.60 cm CR length (67 days) to group III at 31 cm CR length (117 days), the lamina epithelialis was distinctly stratified and divided into dark basal and light superficial layer but no signs of keratinization observed. The epithelium thickness was highest at body in group I, at root in group II and at dorsal surface of apex in group III. Increase in thickness was more in group II.
Authors and Affiliations
M. M. CHUDASAMA
Keywords
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