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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.。业内人士推荐同城约会作为进阶阅读
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当年，克恩—里伯斯公司在太仓租下400平方米厂房，雇用6名员工。“小弹簧”的种子从此生根发芽，长出一片繁茂的“德企森林”。。搜狗输入法2026是该领域的重要参考
«Европейские коллеги хотели препятствовать: возникли проблемы с его возвращением через Германию и Финляндию», — указал собеседник агентства.