April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Developing hair follicles form from ring-shaped patterns, with future stem cells originating from the outer ring, not the upper layers, as previously thought.
4 citations
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January 2023 in “Andrology” The testes produce sperm and hormones essential for male development.
12 citations
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February 1975 in “Journal of Steroid Biochemistry” 20 citations
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March 1975 in “Clinics in Endocrinology and Metabolism” 66 citations
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August 1990 in “Journal of Investigative Dermatology” Epithelial cell growth in rat hair follicles needs contact with mesenchymal cells through the extracellular matrix.
3 citations
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January 2019 in “PubMed” Platelet-rich plasma may be effective for genital rejuvenation and deserves more research.
15 citations
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May 2010 in “Pediatrics in Review” Delayed puberty often runs in families, can affect growth, and may need hormone treatment.
138 citations
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November 1977 in “Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics” 
45 citations
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February 2001 in “Joint bone spine” Gonadal dysgenesis, like Turner's and Klinefelter's syndromes, negatively affects bone health, but hormone treatments can help.
39 citations
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November 2007 in “Journal of Histochemistry & Cytochemistry” NG2 is crucial for normal skin and hair development in mice.