例句與造句

1. the e2 genes above of the prevalent strain ( guangxi yulin strain ) were cloned respectively into secreted expression vector ppic9k of eukaryotic expression system p . pastoris and transformed into p . pastoris by electroporation after linearization, 25 high-copied transformants were obtained by g418 screening . it was proved that the e2 genes were integrated stably into chromosome of p . pastoris by dot blot and dna sequencing
   豬瘟病毒e2基因的真核表達(dá)：分別將csfv兩個(gè)代表株的e2基因克隆入畢赤酵母(p.pastoris)分泌型表達(dá)載體ppic9k中，酶切線型化后電穿孔導(dǎo)入p.pastotis進(jìn)行整合，經(jīng)g418篩選得到25個(gè)高拷貝轉(zhuǎn)化子，經(jīng)dna斑點(diǎn)試驗(yàn)和dna測(cè)序證明外源基因e2穩(wěn)定地整合到p.pastoris染色體中。
2. It's difficult to find system p in a sentence. 用system p造句挺難的