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.
Publication date: 10 March 2026
。夫子对此有专业解读
Great Britain GP — Aug. 9
關恆說，這次的突擊搜查讓他感到吃驚、措手不及，也是完全預料之外的事情，「當時我的心情是很難過，也很擔憂。」
晨起第一件事喝熱水、居家穿棉拖鞋、熬制蘋果銀耳湯……這些在華人、華裔中常見的行為逐漸開始風靡TikTok和Instagram，來自不同國家的年輕人開始效仿，戲稱自己正在「成為中國人」。