April 2022 in “UNESP Institutional Repository (São Paulo State University)” Using both topical minoxidil and oral biotin together significantly boosts hair growth and density.
February 2020 in “VSNU Open Access deal” Hair cortisol levels change with age, starting high at birth, decreasing until age 6, then rising to adult levels by age 18.
October 1988 in “Pediatric research” Certain maturity signs appear before and after the first release of sperm in boys.
11 citations
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July 2001 in “APMIS. Acta pathologica, microbiologica et immunologica Scandinavica./APMIS” Estrogens are key for bone growth spurts in both boys and girls and affect growth into adulthood.
14 citations
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September 2018 in “The journal of allergy and clinical immunology/Journal of allergy and clinical immunology/The journal of allergy and clinical immunology” A boy's growth and immune problems were caused by a new mutation in the STAT5B gene.