2024年12月20日 星期五 新京报
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.
。safew官方版本下载对此有专业解读
Жители Санкт-Петербурга устроили «крысогон»17:52。同城约会是该领域的重要参考
实用、好用的 正版软件，少数派为你呈现 🚀。爱思助手下载最新版本对此有专业解读
Фото: Valentyn Ogirenko / Reuters