Extraction from natural sources

Full Title

Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof > from animals; from humans > Hormones (derived from pro-opiomelanocortin, pro-enkephalin or pro-dynorphin C07K14/665, e.g. corticotropin C07K14/695) > Growth hormone [GH], i.e. somatotropin > Extraction from natural sources