This buffer is used to stabilize samples for archiving and subsequentgenomic DNA extraction. SDS is dissolved to a concentration of 1% (w/v) in DNAB (DNA buffer: 0.4 M NaCl + 0.05 M EDTA in MilliQ water). The buffer may need to be warmed for SDS to completely dissolve. Tissue samples are added to small aliquots of 1% SDS in DNAB and heated to 65°C for 60-90 minutes. They are then stable at room temperature and ready for extraction of genomic DNA.