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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.
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Democrats said that the incident underscored how important it was for there to be a clear public record of the deposition. Rep. Robert Garcia, the top Democrat on the Oversight panel, said that Hillary Clinton, after the incident, repeated her longstanding demand that the deposition be made public, and Democrats called for a video and transcript of the complete proceedings to be released quickly.。关于这个话题，服务器推荐提供了深入分析