
A total of 74 embryos and fetuses were used in a comparative analysis of the epithelium of the non-glandular stomach compartments of merino sheep during development. The mechanical protection showed by the tegumentary epithelium in the superficial layers of the rumen, reticulum and omasum is supported by a buffer system of neutral mucopolysaccharides secreted by the deeper strata. Neutral mucopolysaccharides first appeared in epithelial cells at 46 days of fetal life. Acid mucopolysaccharides, mucins, and mucoid compounds were not detected. Growth curves and formulas were constructed for the epithelial layers.
Omasum, Rumen, Sheep, Stomach, Ruminant, Mucins, Epithelium, Embryonic and Fetal Development, Pregnancy, Animals, Female, Reticulum, Glycosaminoglycans
Omasum, Rumen, Sheep, Stomach, Ruminant, Mucins, Epithelium, Embryonic and Fetal Development, Pregnancy, Animals, Female, Reticulum, Glycosaminoglycans
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