Multiple domains mediate transformation by the Ewing's sarcoma EWS/FLI-1 fusion gene..     ///    These results further demonstrate that EWS/FLI-1 is an aberrant transcription factor and suggest that the EWS domain mediates important protein-protein interactions with other factors resulting in the transcriptional modulation of target genes..     ///    "To determine whether this function is necessary for transformation by EWS/FLI-1, deletion analysis of EWS was performed. "    ///    "In contrast to normal FLI-1, the EWS/FLI-1 fusion transforms NIH3T3 cells and this activity requires both EWS and FLI-1 sequences. "    ///    Finally we demonstrate that EWS/FLI-1 and related FLI-1 chimeras are able to cooperate with another transcription factor to activate a model reporter gene. 