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. 2017 Jun 29;14:24. doi: 10.1186/s12014-017-9160-2

Fig. 1.

Fig. 1

General overview of the GH/IGF-I axis. GH is secreted from the anterior pituitary in response to hypothalamic stimulus and has effects on many tissues in the body, including stimulating large amounts of IGF-I secretion by the l and other tissues. Increases in circulating IGF-I negatively impact GH release from the pituitary gland