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Ночью в выходные столбики термометров покажут от минус 3 до плюс 2 градусов. В субботу, 28 февраля, днем ожидается от 1 до 3 градусов тепла, а на следующий день может потеплеть до плюс 2-4 градусов, рассказал синоптик.,推荐阅读快连下载安装获取更多信息
Without agar, countries could not produce vaccines or the “miracle drug” penicillin, especially critical in wartime. In fact, they risked a “breakdown of [the] public health service” that would have had “far-reaching and serious results,” according to Lieutenant-General Ernest Bradfield. Extracted from marine algae and solidified into a jelly-like substrate, agar provides the surface on which scientists grow colonies of microbes for vaccine production and antibiotic testing. “The most important service that agar renders to mankind, in war or in peace, is as a bacteriological culture medium,” wrote oceanographer C.K. Tseng in a 1944 essay titled “A Seaweed Goes to War.”3