16S rDNA多重PCR检测牙周组织感染菌及混合感染与慢性牙周炎病变程度关系的研究
16S rDNA다중PCR검측아주조직감염균급혼합감염여만성아주염병변정도관계적연구
Study on the detection of P.gingivalis, A.actinomycetemcomitans and T.denticola and the correlation between coinfections of the microbes and levels of chronic periodontitis lesion
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