Nevertheless, it is an easier regeneration from leaves of plants in vitro.
而以试管苗的叶片为外植体进行再生则相对容易；
This paper mainly discusses three topics as follows:1) Origin of haploids in higher plants, 2) Genetics of haploids, 3) Application of in vitro induced haploids.
本文讨论下述问题：1）高等植物单倍体的起源，2）单倍体的遗传学，3）离体诱导单倍体的应。
These experimental results showed that the effect of Nordy on human pulmonary adenocarcinoma cell line A549 in vitro was similar to that of NDGA extracted from plants.
上述实验结果表明，诺帝对人肺腺癌细胞系a549体外生长作用的影响与我们既往使用的植物提取物ndga的作用相似。
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