Peptide Blog

Follistatin (FST) 344 is a synthetic version of the naturally occurring human follistatin protein. Follistatin is found in nearly all tissues of higher animals and comes in two separate isoforms as a result of alternative gene splicing. Its primary biological function is neutralization of proteins in the TGF-beta superfamily. It has particularly potent neutralizing effects on activin, myostatin, and follicle-stimulating hormone.