l carnitine in food sources Foods High L-Carnitine for Energy and Health What the Heck is L-Carnitine?
Description
Although several local growth factors and hormones have been reported to influence the number of SCs, such as follicle-stimulating hormone (FSH) [6265] thyroid hormone, activin, fibroblast growth factor, epidermal growth factor, transforming growth factor , and glial cell line-derived neurotropic factor (GDNF) [12, 6672], a recent report revealed that IGFs are the most important growth factor in regulating SC number and testis size
Now, this is a controversial point
Am J Clin Nutr 63 : 220224
Pasquale EB
