DAPI Counterstain - 150ng/mL Recommended counterstain for FISH probes Lower concentration of DAPI provides a weaker stain Usually preferred with smaller probe signals such as FISH probes DAPI Counterstain - 1500ng/mL Recommended counterstain for a more intense DAPI stain Provides more distinct DAPI banding patterns than achievable with 150ng/mL counterstain Useful for applications such as staining of nuclear DNA in paraffin sections Fluorescent In Situ Hybridization (Cell)