A representative image of FISH applied to CD34⁺Thy-1⁺ and CD34⁺7⁺ cells sorted from BM. (A and C) May-Giemsa stain of CD34⁺Thy-1⁺ and CD34⁺7⁺ cells. (B and D) The hybridized bcr probe was detected with rhodamine (red signal) and the hybridized abl probe with fluorescein (yellow-green signal). A yellow or red/green spot was indicative of BCR/ABL fusion (white arrows).