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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.
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2026-02-28 00:00:00:0新华社记者 ——习近平总书记引领中国从脱贫攻坚迈向乡村全面振兴
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