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.
[Submitted on 20 Feb 2026]
Bloomberg via Getty Images。业内人士推荐safew官方下载作为进阶阅读
В России ответили на имитирующие высадку на Украине учения НАТО18:04。Line官方版本下载对此有专业解读
Grace Bell, who is in her 30s and was born without a viable womb, says her little boy Hugo, who is now 10 weeks old, is "simply a miracle".
為何專家質疑YouGov的數據？。业内人士推荐heLLoword翻译官方下载作为进阶阅读