Figure 2From: Application of tri-colour, dual fusion fluorescence in situ hybridization (FISH) system for the characterization of BCR-ABL1 fusion in chronic myelogenous leukaemia (CML) and residual disease monitoring Representative interphase and metaphase images from the four pattern of signals. The upper panels are probe and reverse DAPI images using the BCR-ABL1 dual colour, dual fusion (D-FISH). The lower panels are probe and the cartoon images using the BCR-ABL1 tri-colour, dual fusion. (A) Group 1: classical 1G1O2F signal pattern using D-FISH. (B) Group 2:ABL1 deletion, 2G1O1F signal pattern using D-FISH. (C) Group 3: BCR deletion, 1G2O1F signal pattern using D-FISH. (D) Group 4: reciprocal ABL1-BCR deletion, 1G1O1F signal pattern using D-FISH.Back to article page