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=== Cyclic Changes in the  Uterus ===
 
=== Cyclic Changes in the  Uterus ===
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* The endometrium shows considerable change during the oestrous cycle.
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* In pro-oestrus and oestrus, endometrial glands are loosely coiled with obvious lumina and a deep epithelial lining.
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* During metoestrus, the glads become larger.  Lumina become smaller and the basal layer of the endometrium becomes more tortuous.
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* As the bitch reaches anoestrus, there is a reduction in the number of glands and the amount that they coil.
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* In metoestrus (~98 days after the onset of oestrus), there is desquamation of the endometrial epithelium.
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* By day 120-130, the endometrium is restored by proliferation of cells from crypts of the endometrial glands.
    
=== Cyclic Changes in the Ovaries ===
 
=== Cyclic Changes in the Ovaries ===
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