第二种机制是一个渐进的适应性变异过程，在这一过程中，伴随人类受到感染，病毒与人体细胞相结合的能力增加了。
The second mechanism is a more gradual process of adaptive mutation, whereby the capability of the virus to bind to human cells increases during subsequent infections of humans.
体细胞变异结合物理化学诱变法可被视作改良果树作物的一种手段，并且在一些果树作物中获得了成功。
Thus, the somatic cell variation in combination with physical and chemical mutagenesis can be considered as one approach to improve fruit crops and have achieved success in some fruit crops.
结合RAPD、SSR、AFLP分析研究椪柑体细胞加倍发生的变异情况，RAPD、SSR分析没有检测到变异的发生，说明加倍过程很少发生重组。
RAPD, SSR and AFLP techniques were ultilized to analyze variations during somatic doubling. No diversities were found by RAPD and SSR analyses, indicating infrequent recombination.
结合形态与结构分析，表明差异蛋白质可能与体细胞胚的发生和发育相关。
In combination with morphological and structural analysis, it indicated that these specific proteins may be relevant to embryo formation and development.
采用体细胞连续定向筛选技术，结合体细胞诱变技术，获得非转基因抗草甘膦的棉花突变体—r 1098。
A cotton mutant, R1098 with the trait of resistance to glyphosate, was obtained by the method of somatic cell inducing and continued directional selection.
自由基是一种高活性分子，极易与人体细胞相结合，破坏人体细胞，被认为是产生疾病和癌症的主要原因。
Free radicals are highly reactive molecules that bind to and destroy body cells, and are considered to be the main cause of disease and aging.
自由基是一种高活性分子，极易与人体细胞相结合，破坏人体细胞，被认为是产生疾病和癌症的主要原因。
Free radicals are highly reactive molecules that bind to and destroy body cells, and are considered to be the main cause of disease and aging.
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