常見(jiàn)例句Following are explanations of the three types of PRV installations. 下面是減壓閥三種安裝方式的說(shuō)明。The ORF-1 gene only esisted among PrV and EHV-1 Ab4 strain, that the homolog of the two strain was 35%. ORF-1基因只存在于PrV和EHV-1 Ab4株中,二者氨基酸同源性為35%25。Pseudorabies viruses (PRV) were replicated in cells of hamster origin (BHK 21 ) and then the PRV DNA extracted. 在BHK21細(xì)胞中增殖偽狂犬病病毒(PRV),提純PRVDNA,選編碼特異性糖蛋白gp50基因中的262bp片段進(jìn)行PCR擴(kuò)增。In this assay, research progress on PRV gene-deleted vaccine used extensively today was discussed. 采取安全有效的疫苗進(jìn)行免疫預(yù)防,是控制該病的主要手段。But PRV has latent infection in pigs which carrys huge difficulty to eradicate it. 而偽狂犬病病毒具有較強(qiáng)的潛伏感染性,從而給偽狂犬病的根除帶來(lái)了相當(dāng)大的困難。Knight Frank is prv oud tom present our first international property exhibition in Asia. 萊坊國(guó)際十分榮幸的向大家推出首屆房地產(chǎn)博覽會(huì)。 返回 PRV