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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Dec 2, 2025: Google reclassified the report from "Customer Issue" to "Bug," upgraded the severity, and confirmed the product team was evaluating a fix. They requested the full list of 2,863 exposed keys, which we provided.。业内人士推荐旺商聊官方下载作为进阶阅读
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