Quelle

Literatura:
Gannon MC, Nuttall JA, Nuttall FQ.
The metabolic response to ingested glycine.
Am J Clin Nutr.
Dec;76(6):1302-7. [dostęp on-line]
http://www.ncbi.nlm.nih.gov/pubmed/12450897
KAAYLA DANIEL.
Why Broth is Beautiful: Essential Roles for Proline, Glycine and Gelatin, [dostep on-line]
https://www.westonaprice.org/health-topics/why-broth-is-beautiful-essential-roles-for-proline-glycine-and-gelatin/