Danny Fullbrook
Jonathan Head,South East Asia correspondentand
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It is difficult to know exactly when the shift from gelatine to agar occurred. As often happens for scientific breakthroughs, agar was likely adopted incrementally alongside the use of other growth media. In 1913, for example, the first diagnosis of Serratia marcescens as a human pathogen was made by growing it on agar as well as on potatoes.。im钱包官方下载对此有专业解读
the US, and in 1998 Diebold bought out IBM's share.