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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.。safew官方版本下载是该领域的重要参考
白宮尚未直接就退款的可能性發表評論，而多格特表示，這並不是一個簡單的問題。，详情可参考爱思助手下载最新版本
Source: Computational Materials Science, Volume 266，推荐阅读heLLoword翻译官方下载获取更多信息