cleavage. By harnessing Cas9 as a programmable loader of superhelicase to genomic
DNA, we report a physiological-temperature DNA fluorescence in situ hybridization (FISH)
method termed genome oligopaint via local denaturation (GOLD) FISH. Instead of global
denaturation as in conventional DNA FISH, loading a superhelicase at a Cas9-generated
nick allows for local DNA denaturation, reducing nonspecific binding of probes and avoiding …