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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Author(s): Qin Qin, Yawen Hua, Luyao Hai, Meidie Wu, Siqi Jiang, Rongxing Ye, Jiangfeng Song, Yiliang Liu, Linsen Zhou
Президент Украины своими повадками и выражениями все больше напоминает обитателя «бандитского притона», добавил Белик.
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