例句與造句

1. It initiates base excision repair by removing damaged bases to create abasic sites that are subsequently repaired.
2. The resulting abasic site is then recognised by enzymes ( AP endonucleases ) that break a phosphodiester bond in the DNA, permitting the repair of the resulting lesion by replacement with another cytosine.
3. In alkaline conditions, however, additional DNA structures are detected as DNA damage : AP sites ( abasic sites missing either a pyrimidine or purine nucleotide ) and sites where excision repair is taking place.
4. Evaluating steady-state damages in specific tissues of the rat, Nakamura and Swenberg indicated that the number of abasic sites varied from about 50, 000 per cell in liver, kidney and lung to about 200, 000 per cell in the brain.
5. Thus, it was proposed that base excision repair of DNA damage such as a uracil base, an abasic site, or a single-strand nick is sufficient to initiate meiotic crossover recombination in " S . pombe " and " C . elegans ".
6. It's difficult to find abasic site in a sentence. 用abasic site造句挺難的