It had been reported that the identification of species was accurate by genomic fingerprinting, so the evolution and identification of a Chinese traditional medicine Cuora trifasciata was studied by 18S ribosomal RNA gene sequences. The nuclear 18S rRNA gene region of muscles of Cuora trifasciata was amplified by PCR using a consensus primer set, and part of nucleotide was sequenced. The results showed that the length of 18S rRNA gene is 678 bp and GC is more abundance than AT. The application of DNA sequencing technique in the identify of Chinese traditional medicine was discussed.
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