Fig 1.

Representative hybridizations from oligodendrogliomas (a-d) and glioblastoma (e). a: 9 p normal status with 2 Green control and 2 Red target signals (2R/2G) in majority of tumoral cells. b: 9p deletion with 1R/2G signal in most nuclei. c: 9p imbalance with an increased copy number of red and green signal. d: codeletion of 9p (red) and 9q (green) consistent with a whole chromosome 9 deletion (monosomy 9). e: deletion of PTEN 1R/2G consistent with 10q deletion. Note the presence of frequent background fluorescent artifacts.