2.7 SELU（Scaled Exponential Linear Unit）
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.。Line官方版本下载是该领域的重要参考
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"Unfortunately no organ would save him but it was his final wish that his life should benefit others and indeed 17 people benefitted from him donating all of his organs when he died," she said.
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