However, Koch never credited the Hesses for their discovery of bacteriological agar, perhaps because, at the time, he failed to recognize its importance. Even after he received the insight about agar from the Hesses, Koch stuck with gelatine for years. In 1883-84, during his first medical expedition to Egypt and India to investigate cholera, he tried and failed to grow the cholera bacterium on gelatine media in the hot climate of Cairo (despite using a half-open fridge for incubation), only succeeding in the colder winter of Calcutta.
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Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10149-8
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2026-03-02 00:00:00:0本报记者 董洪亮 王锦涛 曾亦辰3014295710http://paper.people.com.cn/rmrb/pc/content/202603/02/content_30142957.htmlhttp://paper.people.com.cn/rmrb/pad/content/202603/02/content_30142957.html11921 甘肃以更大勇气和决心扩大开放（“十五五”开好局起好步）
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