Viewpoint: Is lipopolysaccharide a hormone or a vitamin?

Address: Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC 29425, USA; Ralph Johnson VA Medical Center, Charleston, SC 29425, USA.; Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA; Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98104, USA. Electronic address: [email protected].