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.
而据《时代》周刊报道，Anthropic 正式放弃了原有的「单方面暂停训练」核心安全承诺。
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Фото: Belkin Alexey / news.ru / Globallookpress.com
The Royal Artillery is facing criticism after it emerged they are refusing public access to an “extraordinary object” looted by the British army in the 19th century from the Asante people in modern-day Ghana.
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