n.高变
Meanwhile, hypermutation is used to keep the population's diversity and overcome the prematurity. 引入超变异算子维持种群的多样性，提高全局寻优能力。
This paper presents a method of B-cell's hypermutation based on genetic algorithm that can resolve the problem. 本文提出一种基于遗传算法的B细胞高频变异方法,很好地克服了该问题。
Chronicity maybe result from many factors with complex mechanism.HCV may evade the host immune surveillance due to the hypermutation of HCV gene; 其慢性化的机制非常复杂，是由多个因素造成的，HCV因其基因高变性可以逃避宿主的免疫监视；
somatic hypermutation 体细胞高度突变
