例句與造句

1. methods : an artificial gene for fl extracellular domain cdna was synthesized by using favored genetic codons of pichia pastroris . by inserting human fl extracellular domain cdna coding 156 amino acid resi dues into pichia pastoris expression vector ppic9k containing aox1 promoter and the sequences of alpha secreting signal peptides, a recombinant expression plasmid ppic9k-fl was constructed, and integrated into the alcohol oxidase region of the host genome
   為了提高外源基因的表達(dá)量，我們根據(jù)畢赤氏酵母偏愛(ài)密碼子人工合成了編碼fl胞外區(qū)156個(gè)氨基酸的cdna序列，目的序列被定向克隆到酵母分泌型表達(dá)載體ppic9k質(zhì)粒上，構(gòu)建ppic9k-fl表達(dá)質(zhì)粒。
2. It's difficult to find artificial genes in a sentence. 用artificial genes造句挺難的