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第三十条 行政执法机关对行政执法监督机构作出的处理结果有异议的，可以向其提出并说明理由，行政执法监督机构应当及时处理。。旺商聊官方下载对此有专业解读
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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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