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The stages of human pre-adult development, including transition landmarks and endocrine factors mediating growth and development at different stages. IGF2 also strongly mediates prenatal growth. Adapted from Bogin [4,27,28] and Hochberg [29]. IGF2, insulin-like growth factor 2; INS, insulin; IGF1, insulin-like growth factor 1; GH, growth hormone; DHEA, dehydroepiandrosterone; DHEAS, dehydroepiandrosterone sulphate; TESTOS, testosterone.
