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Evidence for Sos1 recruitment to IL2R complex is based on similarity
to it's behavior with the EgfR complex
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  *** Sos1[Ab] copptby[WB] Shc1[Ab] is increased irt IL2 (5 min)
    *** cells: CTLL2 in BMS "IL2-deprived"
    *** unaffected by: Wortmannin [pretreatment]
    *** source: 7760801-Fig-6
  *** Sos1[Ab] copptby[WB] Shc1[Ab] is increased irt IL2 (times)
    *** cells: CTLL20 in BMS "IL2-deprived"
    *** times: 0 1+ 5++ 15+ 30+ min
    *** source: 8294403-Fig-1


  *** Sos1[Ab] phos[WBMS] is increased irt IL2 (10 min)
    *** cells: KIT225 in BMS "IL2-deprived"
    *** inhibited by: PD98059 [pretreatment]
    *** source: 9305919-Fig-5a
