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.
第三十三条 有下列行为之一，造成危害的，处五日以下拘留；情节较重的，处五日以上十五日以下拘留：
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Carbon capture and storage