1. InformedHealth.org [Internet]. Cologne, Germany: Institute for Quality and Efficiency in Health Care (IQWiG); 2006-. “How does the immune system work?” [Updated 2020 Apr 23]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK279364/ 2. Cleveland Clinic. “Immune system.” https://my.clevelandclinic.org/health/articles/21196-immune-system (Last accessed 22/10/10) 3. Maggini, S, et al. “A combination of high-dose vitamin C plus zinc for the common cold.” J Int Med Res. 2012;40(1):28-42. doi: 10.1177/147323001204000104. PMID: 22429343. 4. Tiralongo, E., et al. “Elderberry Supplementation Reduces Cold Duration and Symptoms in Air-Travellers: A Randomized, Double-Blind Placebo-Controlled Clinical Trial.” Nutrients. 2016 Mar 24;8(4):182. doi: 10.3390/nu8040182. PMID: 27023596; PMCID: PMC4848651. 5. Lamm, S, et al. “Persistent response to pneumococcal vaccine in individuals supplemented with a novel water soluble extract of Uncaria tomentosa, C-Med-100.” Phytomedicine. 2001 Jul;8(4):267-74. doi: 10.1078/0944-7113-00046. PMID: 11515716. 6. Aguilar, J.L., et aol. “Anti-inflammatory activity of two different extracts of Uncaria tomentosa (Rubiaceae).” J Ethnopharmacol. 2002 Jul;81(2):271-6. doi: 10.1016/s0378-8741(02)00093-4. PMID: 12065162. 7. Hughes, D. “Effects of carotenoids on human immune function.” Proceedings of the Nutrition Society, (1999) 58(3), 713-718. doi:10.1017/S0029665199000932. 8. Cuevas, A., et al. “Modulation of immune function by polyphenols: possible contribution of epigenetic factors.” Nutrients, 5(7), 2314–2332. 9. Dror, A.A., et al. “Pre-infection 25-hydroxyvitamin D3 levels and association with severity of COVID-19 illness.” (2022) PLOS ONE 17(2): e0263069.https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0263069 10. Ibid., 11. Ghelani, D., et al. “Vitamin D and COVID-19: An Overview of Recent Evidence.” Int J Mol Sci. 2021 Sep 29;22(19):10559. doi: 10.3390/ijms221910559. PMID: 34638897; PMCID: PMC8509048. 12. Ibid., 13. Ibid., 14. Kogut, M.H., et al. “Microbiome and pathogen interaction with the immune system.” Poult Sci. 2020;99(4):1906-1913. doi:10.1016/j.psj.2019.12.011 15. Leischner, C. et al. “Nutritional immunology: function of natural killer cells and their modulation by resveratrol for cancer prevention and treatment.” Nutr J. 2016;15(1):47. Published 2016 May 4. doi:10.1186/s12937-016-0167-8 16. Belkaid, Y., Hand, T.W. “Role of the microbiota in immunity and inflammation.” Cell. 2014;157(1):121-141. doi:10.1016/j.cell.2014.03.011 17. Yoo, J.Y., et al. 18. Belkaid, Y., Hand TW. 19. Yoo, J.Y., et al. “Gut Microbiota and Immune System Interactions.” [published correction appears in Microorganisms. 2020 Dec 21;8(12):]. Microorganisms. 2020;8(10):1587. Published 2020 Oct 15. doi:10.3390/microorganisms8101587 20. Yoo, J.Y., et al. 21. https://www.ncbi.nlm.nih.gov/glycans/ 22. Zhou, J.Y., et al. “The Glycoscience of Immunity.” Trends Immunol. 2018 Jul;39(7):523-535. doi: 10.1016/j.it.2018.04.004. Epub 2018 May 11. PMID: 29759949; PMCID: PMC6029714. 23. Rousseaux, A., et al. “Human Milk Oligosaccharides: Their Effects on the Host and Their Potential as Therapeutic Agents.” Frontiers in Immunology. Vol. 12. 2021. doi: 10.3389/fimmu.2021.680911 ISSN: 1664-3224. https://www.frontiersin.org/articles/10.3389/fimmu.2021.680911. 24. Pujari, R., and Banerjee, G., “Impact of prebiotics on immune response: from the bench to the clinic.” Immunology and Cell Biology. 30 September 2020 https://doi.org/10.1111/imcb.12409. 25. Geller, A., and Yan, J. “Could the Induction of Trained Immunity by β-Glucan Serve as a Defense Against COVID-19? Front Immunol.” 2020 Jul 14;11:1782. doi: 10.3389/fimmu.2020.01782. PMID: 32760409; PMCID: PMC7372085.
©iStock/simarik ©iStock/cagkansayin ©iStock/FreshSplash ©iStock/apomares ©iStock/VioletaStoimenova ©iStock/TARIK KIZILKAYA ©iStock/Plateresca ©iStock/xxwp ©iStock/Whiteway ©iStock/sankai ©iStock/Helin Loik-Tomson ©iStock/t_kimura ©iStock/ThitareeSarmkasat ©iStock/Yuri Arcurs ©iStock/nopparit ©iStock/DrAfter123 ©iStock/Krisada tepkulmanont ©iStock/Helin Loik-Tomson ©iStock/Phawat Topaisan ©iStock/FGTrade ©iStock/OksanaKiian ©iStock/mladenbalinovac