Phylogenetic tree analysis showed there is correlation between PCV-2 isolates and geographic regions.
进化树分析表明各分离毒株在进化上存在地域上的相关性。
参考来源 - 猪2型圆环病毒感染性分子克隆构建及其ORF1基因的表达·2,447,543篇论文数据，部分数据来源于NoteExpress
Bayesian phylogenetic tree analysis was applied to study evolution rule of H3 strain in detail.
为了进一步刻画H 3序列的变异规律，本研究绘制出了全部序列的进化树。
The sequences thus obtained underwent phylogenetic tree analysis and amino acid variation analysis.
然后将所得序列进行系统进化树和氨基酸变异分析。
The phylogenetic tree analysis indicated the broiler MTHFR was closely related to mallard and swan goose.
进化树分析表明，鸡MTHFR氨基酸序列与绿头鸭和鸿雁的关系较近。
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