Sir Astley Cooper and the thymus.
D000917:Antibody Formation; D004739:England; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D008208:Lymphatic System / Q000502:physiology; D008214:Lymphocytes; D013950:Thymus Gland / Q000033:anatomy & histology* / Q000276:immunology / Q000502:physiology