例句與造句

1. grb-ast3 concatemers were respectively cloned into expression vector, pet21b, pet22b, pet30a, in certain insertion orientation and correct reading frame must be insured . after the reading frame was confirmed correct by sequencing, the recombinant plasmid was transformed into expression host e . coli bl21 ( de3 ) plyss
   根據(jù)基因在克隆載體psk上的插入方向，按照正確的閱讀框，將grb-ast_3串聯(lián)體基因分別克隆在大腸桿菌pet21b、pet22b、pet30a三個(gè)不同的表達(dá)載體上。
2. It's difficult to find concatemers in a sentence. 用concatemers造句挺難的