用Nested聚合酶链反应检测嗜肺军团菌的实验研究
用Nested聚合酶链反应(Nested PCR)法检测嗜肺军团菌种。Nested PCR法所用的两对寡核苷酸引物按编码24 kDa嗜肺军团菌表面抗原的基团片段序列设计的。用此两对引物对实验的军团菌种和非军团菌种细菌DNA进行扩增,只有嗜肺军团菌种DNA被扩增,而其他军团菌种和非军团菌属细菌没有被扩增。第1步和第2步PCR分别检测到最小量为10pg和10 fg的靶DNA。对不同量的嗜肺军团菌配制成的痰标本进行检测,能检测到0.1cfu/ml的嗜肺军团菌,只需12h。这些结果显示Nested PCR法检测嗜肺军团菌特异性强,敏感性高。此方法为从临床标本和环境材料中早期、快速检测到嗜肺军团菌提供了...
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| Format: | Article |
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| Language: | zho |
| Published: |
Editorial Office of Journal of Sun Yat-sen University
1993-01-01
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| Series: | Zhongshan Daxue xuebao. Yixue kexue ban |
| Subjects: | |
| Online Access: | http://xuebaoyx.sysu.edu.cn/zh/article/43591634/ |
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