damage agent造句

• The damaging agents have been grouped according to the type of damage they cause .
  为害的因子按其为害的类型进行归类。
• Mms , a kind of dna - damaging agent , predominantly methylates ring nitrogens of pyrine , leading to dna double - strand breaks , point mutation and so on
  甲磺酸甲酯( methylmetbanesulfonate ， mms )是一种能够损伤dna的烷化剂，主要使dna嘌呤碱基上的o 、 n甲基化，造成dna双链断裂、点突变。
• However , organism can react to the stress actively and the mutagenesis is not a passive event . sos response is employed in dna damaging agents challenged e . co / i , to cope with abnormal conditions
  当受到外源dna损伤因子的攻击时，大肠杆菌e . coil能启动sos反应以应对不良环境，提高对致损伤刺激的耐受能力，减少损伤的发生。
• Recent reports showed that telomerase activity in s . cerevisiae cells could be significantly up - regulated after exposure to some dna - damaging agents , which may be related with dna - damage repair
  端粒酶与细胞生长、繁殖、衰老及肿瘤的发生密切相关。近来研究发现，酿酒酵母经dna损伤剂作用后端粒酶活性升高，可能与端粒dna损伤后修复机制有关。