统筹建立常态化防止返贫致贫机制
Фото: Влад Некрасов / Коммерсантъ
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Agar was first introduced into the laboratory in 1881. Since then, microbiologists have depended on agar to create strong jellies. When microorganisms are streaked or plated onto this jellied surface and incubated, individual cells multiply into distinct colonies that scientists can easily observe, select, and propagate for further experiments. Many of the most important findings in biological research of the last 150 years or so — including the discovery of the CRISPR/Cas9 gene-editing tool — have been enabled by agar.4 Agarose, a derivative of agar, is also essential in molecular biology techniques like gel electrophoresis, where its porous gel matrix separates DNA fragments by size, enabling researchers to analyze and isolate specific genetic sequences.
In Trump's eyes it is a big business opportunity for the US oil sector. "We're going to be extracting numbers in terms of oil like few people have seen," he said at a news conference in mid-January, after a meeting with energy bosses at the White House.
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