CGH profiles of MCF-7-R cells and its three subclones. Events were ordered from left to right for gains and from right to left for losses. The relative order was (1) MCF-7-R, (2) MCF-7-R-D4, (3) MCF-7-R-G1, (4) MCF-7-R-F3. Circled events were specific to daughter clones. Boxed events correspond to gains or losses found only in the mother line (bold line) or in the mother and one or two subclones (dotted boxes).