Fig. 1From: Comparative study of the efficacy of dexmedetomidine and fentanyl on anxiety and pain of parturients with different COMTva1158met genotypesThe polymorphism of the COMTval158met gene was identified using polymorphic site direct PCR sequencing. The orange-labeled trinucleotide is the codons corresponding to amino acid 158 (Val), and the sequencing peak corresponding to the sequence is sequenced. The gray-marked base is the polymorphic siteBack to article page