Фото: Gleb Garanich / Reuters
京港澳高速：鹤壁北站-鹤壁南站；
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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.，这一点在快连下载安装中也有详细论述
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Bidoof started as a joke. Then it became a legend.