[Chromosomal R-banding with an anti-native DNA (dG-dC specificity) monoclonal antibody]

Chromosomal R-banding was obtained by the use of an anti ds-DNA monoclonal antibody, specific for dG-dC, at an appropriate dilution. Better results were observed when chromosome preparations were trypsinized for 10 sec. with 0.02% trypsin solution. Antibody fixation could be evidence either by immunofluorescent or by immunoenzymatic staining.