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* The phase after oestrus
 
* The phase after oestrus
* Granulosa cells of the ovulated follicle give rise to lutein cells, which are responsible for the formation of the corpus luteum.
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* During early metoestrus, both oestrogen and progesterone levels are relatively low.
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* Granulosa cells of the ovulated follicle give rise to lutein cells, which are responsible for the formation of the corpus luteum (luteinization).
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* Progesterone secretion is detectable soon after ovulation, with significant quantities produced in 2-5 days.  This marks a transition from oestrogen to progesterone dominance.
 
* Reduction in secretion from uterine, cervical and vaginal glands.
 
* Reduction in secretion from uterine, cervical and vaginal glands.
  
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