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Chinese authorities Tuesday defended their management measures on virtual private networks (VPN), saying the measures will have no negative impact o...
ssr标记技术的原理(yuan li)如下：根据微卫星序列(xu lie)两端互补序列(xu lie)设计引物,通过PCR反应(fan ying)扩增微卫星片段,由于核心序列(xu lie)串联重复(zhong fu)数目...