Agostini, Francesco, and Gianni Biolo. "Effect of Physical Activity on Glutamine Metabolism." Current Opinion in Clinical Nutrition and Metabolic Care 13, no. 1 (January 2010): 58–64. https://doi.org/10.1097/MCO.0b013e328332f946.
Churchward-Venne, Tyler A, Philippe J M Pinckaers, Joey S J Smeets, Milan W Betz, Joan M Senden, Joy P B Goessens, Annemie P Gijsen, Ian Rollo, Lex B Verdijk, and Luc J C van Loon. "Dose-response effects of dietary protein on muscle protein synthesis during recovery from endurance exercise in young men: a double-blind randomized trial." The American Journal of Clinical Nutrition 112, no. 2 (August 2020): 303–17. https://doi.org/10.1093/ajcn/nqaa073.
Elango, Rajavel, and Ronald O Ball. "Protein and Amino Acid Requirements during Pregnancy123." Advances in Nutrition 7, no. 4 (11 July 2016): 839S–844S. https://doi.org/10.3945/an.115.011817.
Massachusetts General Hospital. "Proline Metabolism in Severely Burned Patients: Effect of Modulated Parenteral Feeding." Clinical trial registration (clinicaltrials.gov, 12 January 2017), https://clinicaltrials.gov/ct2/show/NCT00216983.
Rees, William D., Fiona A. Wilson, and Christopher A. Maloney. "Sulfur Amino Acid Metabolism in Pregnancy: The Impact of Methionine in the Maternal Diet." The Journal of Nutrition 136, no. 6 (1 June 2006): 1701S–1705S. https://doi.org/10.1093/jn/136.6.1701S.
Scaldaferri, Franco, Loris Riccardo Lopetuso, Valentina Petito, Valerio Cufino, Mirna Bilotta, Vincenzo Arena, Egidio Stigliano, et al. "Gelatin tannate ameliorates acute colitis in mice by reinforcing mucus layer and modulating gut microbiota composition: Emerging role for 'gut barrier protectors' in IBD?" United European Gastroenterology Journal 2, no. 2 (April 2014): 113–22. https://doi.org/10.1177/2050640614520867.
Vollmer DL, West VA, Lephart ED. Enhancing Skin Health: By Oral Administration of Natural Compounds and Minerals with Implications to the Dermal Microbiome. Int J Mol Sci. 2018;19(10):3059. Published 2018 Oct 7. doi:10.3390/ijms19103059 https://doi.org/10.3390/ijms19103059
Wang, Bin, Guoyao Wu, Zhigang Zhou, Zhaolai Dai, Yuli Sun, Yun Ji, Wei Li, et al. "Glutamine and Intestinal Barrier Function." Amino Acids 47, no. 10 (October 2015): 2143–54. https://doi.org/10.1007/s00726-014-1773-4.
Zhong, Zhi, Micheal D. Wheeler, Xiangli Li, Matthias Froh, Peter Schemmer, Ming Yin, Hartwig Bunzendaul, Blair Bradford, and John J. Lemasters. "L-Glycine: A Novel Antiinflammatory, Immunomodulatory, and Cytoprotective Agent." Current Opinion in Clinical Nutrition and Metabolic Care 6, no. 2 (March 2003): 229–40.
Honvo, Germain, Laetitia Lengelé, Alexia Charles, Jean-Yves Reginster, and Olivier Bruyère. 2020. "Role of Collagen Derivatives in Osteoarthritis and Cartilage Repair: A Systematic Scoping Review With Evidence Mapping." Rheumatology and Therapy 7 (4): 703–40. https://doi.org/10.1007/s40744-020-00240-5.
"FoodData Central." https://fdc.nal.usda.gov/fdc-app.html#/food-details/173469/nutrients.
Halima, Ben Hmad, Khlifi Sarra, Ben Jemaa Houda, Gara Sonia, and Aouidet Abdallah. "Antihyperglycemic, Antihyperlipidemic and Modulatory Effects of Apple Cider Vinegar on Digestive Enzymes in Experimental Diabetic Rats." International Journal of Pharmacology 12, no. 5 (12 November 2016): 505–13. https://doi.org/10.3923/ijp.2016.505.513.
Hadi, Amir, Makan Pourmasoumi, Ameneh Najafgholizadeh, Cain C. T. Clark, and Ahmad Esmaillzadeh. "The effect of apple cider vinegar on lipid profiles and glycemic parameters: a systematic review and meta-analysis of randomized clinical trials." BMC Complementary Medicine and Therapies 21 (29 June 2021): 179. https://doi.org/10.1186/s12906-021-03351-w.
Yeh, Zoe. "Is Apple Cider Vinegar Effective for Reducing Heartburn Symptoms Related to Gastroesophageal Reflux Disease?" Arizona State University, 2016.https://keep.lib.asu.edu/items/154285.