In most influenza viruses the PB1 gene encodes three proteins.
在大多数流感病毒PB 1基因编码三种蛋白质。
Percentage of undergoing germinal vesical breakdown and PB1 extrusion in cumulus-oocyte complex groups was higher than that in denuded oocyte groups(P<0.05).
卵丘-卵母细胞复合物各组的卵母细胞生殖泡破裂发生率和第一极体排除率明显高于裸卵各组（P<0.05）。
Methods To illustrate the relationship of H3 subtype influenza virus with other subtypes, we carried out the sequence analysis of PB1 polymerase genes of three H3N8 subtype du.
方法对活禽市场分离的3株H3N8亚型鸭源流感病毒聚合酶PB1基因进行了序列分析。
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