DTI Uracil DNA Glycosylase(UNG), Heat-labile, (Glycerol Free) (2 U/ul) hydrolyzes N-glycosylic bonds between the deoxyribose sugars and the uracil bases in uracil-containing DNA leaving apyrimidinic sites in the DNA. UNG excises uracil from both single- and double-stranded dU-containing DNA but not from RNA. The glycerol free version makes the product suitable for lyophilisation.