Genotype of CD83-sorted, Ph⁺leukemia-derived DC (patient AB). The figure shows interphase nuclei from a CD83-sorted positive culture of leukemia-derived DC. A normal interphase nucleus shows 2 orange (bcr) and 2 green (abl) signals. Nuclei with bcr-abl fusion show 1 orange signal (bcr), 1 green signal (abl), and the fusion (bcr-abl) orange and green signal (arrow).