PCR Products (IMAGE) Neural Regeneration Research Caption PCR products of methylenetetrahydrofolate reductase C677T DNA samples extracted with magnetic nanoparticles using saliva samples (lanes 1-5) and with traditional methods using blood samples (lanes 7-11). Credit Neural Regeneration Research Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.