title: History of immunology. The royal experiment on immunity: 1721-1722.
mesh_terms: D004739:England; D006076:Government; D049671:History, 18th Century; D049711:History, Modern 1601-; D006801:Humans; D007109:Immunity; D008131:London; D011329:Prisoners; D012899:Smallpox / Q000266:history*; D012955:Societies, Medical; D014611:Vaccination / Q000266:history