passages.id: 1.0alpha7.train.1212.sent
passages.type: sentence
passages.text: We next measured  PP1 activity bound to endogenous  STK15 derived from  interphase and mitotic extracts.
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coreferences.entity_ids: 1.0alpha7.train.1212.ent0_0
coreferences.id: 1.0alpha7.train.1212.coref1
coreferences.entity_ids: 1.0alpha7.train.1212.ent1_0