Identification of Cryptosporidium in Environmental Sample using Nested PCR-RFLP and DNA Sequencing

Nested PCR-RFLP 및 DNA Sequencing을 이용한 환경시료에서의 크립토스포리디움 동정

  • Received : 2008.09.18
  • Accepted : 2008.10.30
  • Published : 2008.11.30


In order to identify various Cryptosporidium species in environment, nested PCR-RFLP and DNA sequencing method were used. The sensitivity of nested PCR-RFLP based on 18s rRNA gene was shown to 1 oocyst. Therefore, we applied nested PCR-RFLP method to environmental samples. As a result, only 4 samples out of 8 samples confirmed as Cryptosporidium parvum by standard method of Cryptosporidium were identified as Cryptosporidium parvum by nested PCR-RFLP and DNA sequencing method. The rest of 4 samples among 8 samples were identified as Cryptosporidium muris, Cryptosporidium bailey. Therefore, in addition to standard method of Cryptosporidium, supplementary verification through nested PCR-RFLP and DNA sequencing should be needed to give more accurate information about risk of Cryptosporidium.


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