after passage of the hybridization mixture through a nitrocellulose column to remove single-strand dna and dna -- rna hybrids , the eluent was measured for its capacity to promote deoxynucleotide kinase ( gene 1 ) synthesis in an in vitro protein-synthesizing system derived from uninfected escherichia coli .
C0012935
single-strand dna
C0012854
dna