الفهرس 
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Abstract
The aim of this work is to clarify the role of the modulatory effect of thymoqinone on the suppressor act of cortisone on the immune system.
Result:
In group c1, on observable Structural changes regarding the duodenal mucosal vill ; however , brunner s glands exhibited a moderate increase in the collagen and reticular fibers especially in the glandular cental area while nuclei appeared extra- basal . There was a slight localization for connective tissue fibers among different segments of brunner s glands.
In group c3, neither the duodenal mucisal villi , nor the duodenal brunner s glands exhibited obvious changes.