Before agar, microbiologists had experimented with other foodstuffs as microbial media. They turned to substances rich in the starches, proteins, sugars, fats, and minerals that organisms need for growth, testing with broths, bread, potatoes, polenta, egg whites, coagulated blood serums, and gelatine. However, none worked particularly well: all were easily broken down by heat and microbial enzymes, and their surface, once colonized, became mushy and unsuitable for isolating microbes.
容留他人吸食、注射毒品或者介绍买卖毒品的，处十日以上十五日以下拘留，可以并处三千元以下罚款；情节较轻的，处五日以下拘留或者一千元以下罚款。
。夫子对此有专业解读
Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10121-6
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2024年12月23日 星期一 新京报