application of a monoclonal antibody ( mab er-6 ; rajewsky et al. , 1980 ) specific for o6-ethyl-2'-deoxyguanosine ( o6-etdguo ) , in conjunction with a protein-free spreading procedure for double-stranded dna molecules and transmission electron microscopy , permits the visualization of antibody molecules complexed to o6-etdguo residues formed in dna upon reaction with the carcinogen n-ethyl-n-nitrosourea ( etnu ) ( nehls et al. , 1984 ) .
C0003250
mab
C0003241
antibody