production of single-stranded deoxyribonucleic acid ( dna ) at elevated temperatures was monitored by digesting chromatin with endonuclease specific for single-stranded dna ( s1 nuclease ) , staining the residual dna with gallocyanin-chrome alum ( gac ) and measuring the stain content by absorption cytophotometry .
C0012935
single-stranded dna
C0012854
dna