Aneuploidy without translocations in Art-null sarcomas. Spectral karyotype (SKY) analysis of Art-null sarcomas: (a) AP812, osteosarcoma; and (b) APJ4631, rhabdomyosarcoma. Shown for each is the 4’,6’-diamidino-2-phenylindole (DAPI)-stained metaphase (inverted image, top left) with superimposed chromosome contours (blue), spectral image of SKY painted metaphase spread (top, middle), and computer classified image (top, right), as well as the karyotype table showing aneuploidy (bottom).