就在几年前，这片土地上还是另一番景象。2018年，达博从美国回到冈比亚，子承父业，投身农业，却遭遇“迎头痛击”。“我空有一腔热情，但对水稻种植一窍不通。一开始，杂草比稻苗还高，灌溉靠天，收割靠手。虽然投入巨大，收获却寥寥无几。”达博说。
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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.
union object_info { union object_info *next; };