الفهرس 
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Abstract
SUMMARY AND CONCLUSION
The histomorphological changes occuring in the fetal stomach of
one humped camel ranging from 38 to 1230 mm CVR lengths were
studied using light and scanning electron microscopy. In addition morphometric measurments were carried out during the same period of intrauterine life
At the early embryonic stages, the fetal stomach could be recognized into three compartments communicated with each others. Their wall was composed of three distinct layers; mucosa, musculosa and serosa.
The mucosal surface of the first compartment of camel stomach
showed two distinct portions, smooth and folded. At 38 mm CVR length embryos, the mucosa of the smooth portion was lined by pseudostratified
columnar epithelium which changed into stratified columnar in fetuses of 170 nun CVR length. Squamation of the lamina epithelialis was firstly observed in fetuses of 400 nun CVR length. In addition, cornification of this epithelium began to appear in fetuses of 670 mm CVR length.
Semithin sections as well as scaxming electron microscopy revealed that the surface epithelium of the mucosal smooth portion composed of ciliated and non ciliated microvillus covered cells. The ciliated cells were firstly observed in fetuses of 125 mm CVR length and greatly exceeded the non ciliated types at 170-230 mm CVR lengths, then decreased relatively with advancement of age.