Baxter David
Epidemiology and Health Sciences, Stopford Building, Manchester University Medical School, Oxford Road, Manchester, UK.
Occup Med (Lond). 2007 Dec;57(8):548-51. doi: 10.1093/occmed/kqm109.
Abstract Protection against the large numbers of pathogenic microbes to which humans are constantly exposed is effected through external barriers (skin and mucus membranes), innate barriers (cellular components and soluble chemical mediators) and adaptive barriers (B and T lymphocytes). This article reviews the normal mechanisms employed to protect against these pathogenic microbes.
