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第九十二条 公安机关办理治安案件，有权向有关单位和个人收集、调取证据。有关单位和个人应当如实提供证据。。业内人士推荐搜狗输入法2026作为进阶阅读
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.。业内人士推荐搜狗输入法下载作为进阶阅读