Fig. 1
From: FISH-negative BCR::ABL1-positive e19a2 chronic myeloid leukaemia: the most cryptic of insertions
fluorescence in situ hybridisation using dual colour dual fusion probe for BCR (green) and ABL1 (red) showing (top) dual channel image of a derivative chromosome 22 arising from a standard cryptic insertion, (middle) dual channel image of the current patient’s derivative chromosome 22 and (bottom) as above, showing only the single Texas Rad channel. No green signal is detectable