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.
The change to agar was a marked improvement. The jelly is so effective that it is still an invariable ingredient in what is known today as the “Koch’s plating technique” or the “culture plating method.” As Koch himself noted in 1909: “These new methods proved so helpful…that one could regard them as the keys for the further investigation of microorganisms…Discoveries fell into our laps like ripe fruits.”，推荐阅读51吃瓜获取更多信息
2026-02-28 00:00:00:03014273110http://paper.people.com.cn/rmrb/pc/content/202602/28/content_30142731.htmlhttp://paper.people.com.cn/rmrb/pad/content/202602/28/content_30142731.html11921 国务院任免国家工作人员，推荐阅读服务器推荐获取更多信息
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