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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「雖然有人覺得這可能只是曇花一現的網絡潮流，但我傾向於思考這個網絡文化背後所代表的更為廣泛的社會問題。Z世代確實更擅長把一切都變成玩笑，無論如何，這就是一種人們表達對美國現狀不滿的一種方式，」克萊爾這樣說。
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