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This was not the first time that microbiologists experienced problems with agar. A phenomenon called “The Great Plate Count Anomaly” baffled researchers in the early 20th century when they observed that the number of cells seen under a microscope didn’t match the actual number of colonies growing on an agar plate. Investigating this discrepancy, researchers found agar itself to be the culprit: when nutrient broths are heated with agar during boiling, harmful byproducts (hydroperoxide) can form due to the reaction of agar with phosphate minerals contained in the media. Researchers can avoid this by autoclaving agar separately from the nutrient broth, or by reducing the amount of agar used.
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6 February 2026ShareSave
Исполнитель признался, что процедура подачи документов для присвоения звания показалась ему смешной. Кроме того, Шура не увидел смысла в его получении, поскольку за это «даже карту "Тройка" не дают».
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百度去年 AI 业务营收达 400 亿元，萝卜快跑累计出行破 2000 万
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