HomeGlossaryInterleukins Interleukins December 16, 2003 Share FacebookTwitterPinterestWhatsAppCopy URLLinkedin Glossary Substances secreted by lymphocytes; their levels vary with age.Substances secreted by lymphocytes; their levels vary with age. Share FacebookTwitterPinterestWhatsAppCopy URLLinkedin Previous articleHayflick LimitNext articleLymphocytes WorldHealth Staffhttps://www.worldhealth.netWorldhealth.net is a not-for-profit trusted source of non-commercial health information, and the original voice of the American Academy of Anti-Aging Medicine Inc. RELATED ARTICLES Awareness Protect Yourself from Mold Toxins this Spring April 17, 2026 Healthy Living Why More Indianapolis Families Are Choosing At-Home Fitness Solutions April 17, 2026 Infection Protection Understanding Household Germs: How Long Can the Cold Virus Live on a Surface? April 17, 2026 Most Popular Protect Yourself from Mold Toxins this Spring April 17, 2026 Why More Indianapolis Families Are Choosing At-Home Fitness Solutions April 17, 2026 Understanding Household Germs: How Long Can the Cold Virus Live on a Surface? April 17, 2026 What People Get Wrong About ‘Feeling Healthy’ April 17, 2026 Load more