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Biology 16 Online
OpenStudy (anonymous):

What is PRF and PIF? And what is CRF and CIF? In endocrinology?

Directrix (directrix):

Go here and read about halfway down the page: http://medical-dictionary.thefreedictionary.com/prolactin+inhibitory+factor+(PIF) You can easily "google up" the others.

OpenStudy (anonymous):

It's common sense Gaspy.

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