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Objective: To develop a simple and efficient way to perform site-directed mutagenesis.
目的：介绍一种简便、有效的定点突变技术。
youdao
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In 1958, he has directed the "youth site" and three films.
1958年，他先后导演了《工地青年》等三部影片。
youdao
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In 1958, he has directed the "youth site" and three films.
1958年，他先后导演了《工地青年》等三部影片。
youdao