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.
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南方周末：关于本届肖赛，社交媒体上的争议空前地多，甚至有一些音乐家提出，音乐比赛本身就不应该存在。你怎么看这种说法？。关于这个话题，safew官方版本下载提供了深入分析
在冬奧前夕，谷愛凌接受了《Vogue》和《時代》雜誌等媒體專訪，但真正可能進一步激化這項運動頂尖選手間競爭關係的，卻是瑞士媒體的報導。