For immunohistochemical labeling of 17-hydroxysteroid dehydrogenase (HSD17B) Bouins solution-fixed testes section were deparaffinized, rehydrated, blocked by incubation with 1% rabbit serum in phosphate buffered saline (PBS) and incubated with rabbit anti-HSD17B antibody (sc-31,620, Santa Cruz Biotechnology, Dallas, TX) diluted to 4 g/mL in 1% rabbit serum in PBS in a humidified chamber overnight at 4 C
Importantly, clock gene expression across different TH states is largely unaffected, suggesting that the diurnal effects of THs are downstream of the circadian clock 103,104
KC: Data curation, Project administration, Writing original draft, Writing review & editing
These signaling pathways interact during hair follicle development, collectively regulating the hair growth cycle [27]
By weeks three and four, most people notice improvement