Aldehyde dehydrogenase 2 gene fragment in human nail clippings

An individual genotype of aldehyde dehydrogenase 2 (ALDH2) was surveyed and detected when using nail clippings and saliva, respectively by the method consisting of DNA extraction, genomic DNA amplification by polymerase chain reaction, and gel electrophoresis of DNA fragment. Gene analysis using fingernail DNA was found to be effective in that they were easily to collect from human samples, in that they were kept storable at -80℃ until use, and in that DNA of the sample was very stable after repeated treatment of freezing and thawing