Fluorescence in situ hybridization (FISH) technology is an effective tool for detecting specific nucleic acid targets in a biological specimen. Detection of a nucleic acid target in situ is achieved through the hybridization of a fluorescent dye-labeled nucleic acid probe of complementary sequence to the specimen. The Readilink™ iFluor® 647 FISH fluorescence imaging kit is a convenient tool for labeling a target DNA using an iFluor® 647 labeled FISH probe via in situ hybridization. The kit provides Taq DNA polymerase enzyme which incorporates iFluor® 647-dUTPs in the target DNA through Polymerase Chain Reaction (PCR). Our proprietary iFluor® dyes are brighter and more photostable than traditional fluorescent labels, providing the desired resolution and signal.