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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在日照市昱岚新材料有限公司智能车间，一卷3毫米厚的钢卷从生产线一端“吞”入，5分钟后便从另一端“吐”出，化作厚度不足0.1毫米的薄钢板。“钢比纸薄”的行业奇迹，在此生动上演。
A proof-of-concept study opens up an avenue for treating solid tumours that express low levels of a target antigen.