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.
約在同一時期,她在英國的鄰居亦收到信件,指若將她交給中國使館可獲9.5萬英鎊賞金。類似信件亦寄給至少另一名在英港人社運人士。
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The court of appeal has rejected the latest challenge to the addition of VAT to private school fees, telling parents they have the option to home school their children if they object to sending them to state schools.