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Oestrous Cycle - Anatomy & Physiology (view source)

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* By day 5 of dioestrus, the corpus luteum is 0.6cm in diameter.

* It then attains a maximum size of 0.9cm diameter and has a central cavity.

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* Over the period of dioestrus, the colour changes from blood red to pale pink. The size stays constant until the onset of th next oestrus.

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* Over the period of dioestrus, the colour changes from blood red to pale pink. The size stays constant until the onset of the next oestrus.

* At the onset of the next oestrus:

** Regression of the corpus luteum of the previous cycle is rapid

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