passages.id: 1.0alpha7.train.1369.sent
passages.type: sentence
passages.text:  The binding of  Raf-1 to  Rb occurs subsequent to mitogen stimulation, and this interaction can be detected only in proliferating cells.  
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coreferences.entity_ids: 1.0alpha7.train.1369.ent0_0
coreferences.id: 1.0alpha7.train.1369.coref1
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