1 Crisan D,Cadoff EM,Mattson JC,et al.Polymerase chain reaction:amplification of DNA from fixed tissue.Clin Biochem,1990,23 489. 2 Forsthoefel KF,Papp AC,Snyder PJ,et al.Optimization of DNA extraction from formalin-fixed tissue and its clinical application in Duchenne muscular dystrophy.Am J Clin Pathol,1992,98 98. 3 Heller MJ,Brugart LJ,Ten Eyck CJ,et al.An efficient method for the extraction of DNA from formalin-fixed,paraffin-embedded tissue by sonication.Biotechniques,1991,11 372. 4 Heller M J,Robinson RA,Burgart LJ,et al.DNA extraction by sonication:a comparison of fresh,frozen and paraff in-embedded tissues extracted for use in polymerase chain reaction assays.Mod Pathol,1992,5 203. 5 Rogers BB,Alpert L C,Hine EAS,et al.Analysis of DNA in fresh and fixed tissue by the polymerase chain reaction.Am J Pat hol,1990,136 541. 6 Walsh PS,Metzger DA,Higuchi R.Chelex 100 as a medium for simple extraction of DNA for PCR-based typing from forensic material.Biotechniques,1991,10 506. |