迪士尼 CEO 鲍勃 · 艾格：创造本质上是冒险
Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36
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Hospitals and care homes in the UK face “an impending car crash”, experts have warned, as research shows the number of overseas nurses and carers has collapsed.
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.