Objective In order to comprehend the ratio of the mutation of connexin26(Cx26)gene(GJB2)in the congenital deafness cases of Jilin province,we inspected the mutation of connexin26(Cx26) gene(GJB2)of 41 cases.Methods The blood samples were obtained to distill the DNA templates.Using polymerase chain reaction(PCR),the code region of Cx26 gene was amplified.Genomic DNAs were extracted by Agarose Gel Electrophores and inspected PCR production coding region.Results Genomic DNAs from 41 cases were extracted and am...