This study explored the origin and evolution of Leiqiong cattle, basing on the sequenced complete mitochondrial cytochrome b gene and the cited bovine sequence data.
在测定雷琼牛线粒体Cytb基因全序列的基础上，引用其它牛种的序列资料，以探讨雷琼牛的起源演化。
ObjectiveTo study the mechanisms of the hepatitis B virus(HBV) clearance with clinical data.
目的探讨急性乙型肝炎患者血清乙型肝炎病毒（HBV）清除及临床转归的机制。
ObjectiveTo study the mechanisms of the hepatitis B virus(HBV) clearance with clinical data.
目的探讨急性乙型肝炎患者血清乙型肝炎病毒（HBV）清除及临床转归的机制。
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