Ọ lụrụ Nathaniel Henry Alcock, bụ́ ọkà n'ịgwọ ọrịa ụzarị ọkụ, n'afọ 1905 ma kwaga Canada.
N'ezie, ụdị nkebi ahịrịokwu ahụ dị mgbagwoju anya bụ "Ọ lụrụ Nathaniel Henry Alcock, onye na-ahụ maka radiology na 1905, wee kwaga Canada, mana ọ nwụrụ n'ọrịa kansa wee laghachi Britain wee nweta ọkwa na Laboratory Pathology Laboratory, Ministry of Agriculture, Kew Gardens, nke mechara kwaga Harpenden. "