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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空间太阳能电站还能带来多重附加价值:一是给卫星减负,使其摆脱庞大笨重的太阳翼(帆),换上小巧的接收天线,从“太空充电桩”获取电力,显著提升灵活性和续航能力;二是实现能量和信息双传输,让通信、导航卫星的天线同时具备接收电力的功能;三是优化太空信息处理,在太空直接完成数据处理,避免当前“太空压缩、天地传输、地面解压”模式带来的丢包、失真等问题;四是为月球基地、火星前哨站等深空探测设施提供远程无线供电。