Mepụta ụdị okwu a dị mgbagwoju anya karị'' Oxford Dictionary of National Biography ;'' Abraham, Sir Edward Penley'' Chain chọpụtara otú e si ekewapụ penicillin na - egbu nje ma mee ka ọ dị n'ime ya.
N'ezie, ụdị nke ahịrịokwu ahụ dị mgbagwoju anya bụ "' Oxford Dictionary of National Biography;'' Abraham, Sir Edward Penley'' N'oge na-adịghị anya mgbe ndị otu ahụ bipụtara nsonaazụ mbụ ya na 1940, Fleming kpọrọ Howard Florey, onye isi ngalaba Chain, iji kwuo na ọ ga-abịa nleta n'ime ụbọchị ole na ole sochirinụ. "