例句與造句

1. According to above consideration , experiments was carried out as below : first , targeted gene - human serum albumin ( hsa ) gene was obtained via pcr technology . secondly , the hsa gene was liganded with a plasmidprla22 whose two arms carry dna sequences necessary for crossing with the human a - lactalbumin yac to form an integration vector prla - hsa , then the integration vector plasmid was co - transformated into the right yac - bearing yeast with another plasmid plrh33 which carrys a selective gene
   因此，本試驗首先擴增出整合在酵母基因組里的人血清白蛋白( hsa )基因作為目的基因，并將人血清白蛋白基因插入到一個含有人-乳白蛋白yac同源序列的重組型質粒載體，以構建整合型載體，再與另一個帶篩選基因的質粒共轉化入含人-乳白蛋白yac的酵母細胞體內(nèi)。
2. It's difficult to find selective gene in a sentence. 用selective gene造句挺難的