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Topic: Progestagen

Progesterone

Hormone

Trophic hormone

Insulin

Thyroxine

	Reference.com/Encyclopedia/Sex steroid
		Other contexts will include progestagen as a third class of sex steroids, distinct from androgens and estrogens.
		Progesterone is the most important and only naturally occurring human progestagen.
		Synthetic androgens are often referred to as anabolic steroids.
	www.reference.com /browse/wiki/Sex_steroid (260 words)

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