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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在《何为中原——新石器至青铜时代中原文化区的新认识》一文中，戴向明审视黄河流域考古学文化的长期发展后指出，中原并非天生就是中心，而是长期文化激荡后凝聚而成的文明质心。更为关键的是，中原地区也提供了多元文化向统一中华认同转变的土壤。
Knowledge Retrieval（规范/PRD/接口文档）
Pug found in a grave