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A different sequencing method that chemically cleaved DNA at specific bases, developed by Allan Maxam and Walter Gilbert, was the dominant technology into the 1980s. Radiolabeled DNA samples were incubated in four separate reactions, each of which contained a chemical that cleaved after a different nucleotide — either A/G, G, C, or C/T. By adding the right amount of each chemical, it was possible to produce different fragments chopped off at each individual base. The sequence could then be read using gel electrophoresis and autoradiography. Maxam–Gilbert sequencing was easier than the plus and minus method to run and interpret, but was eventually surpassed by Sanger’s chain termination method, which molecular biologists found both technically preferable and more “elegant” since it mirrored the natural copying of DNA.，这一点在im钱包官方下载中也有详细论述
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李成伟代表敏锐地观察到，目前一些地方的智慧农业建设存在技术应用脱离实际的问题，不少农民尚未掌握精准灌溉、智能温室等关键技术，要加快智慧农业技术全国性推广和普及。，这一点在safew官方版本下载中也有详细论述
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