passages.id: 1.0alpha7.train.1225.sent
passages.type: sentence
passages.text: Truncated MDC lost binding to  CCR4, the only characterized receptor for this  chemokine ( 30), although it maintained chemotactic activity likely via interaction with an undefined cell surface molecule ( 22).
coreferences.id: 1.0alpha7.train.1225.coref0
coreferences.entity_ids: 1.0alpha7.train.1225.ent0_0
coreferences.id: 1.0alpha7.train.1225.coref1
coreferences.entity_ids: 1.0alpha7.train.1225.ent1_0
coreferences.id: 1.0alpha7.train.1225.coref2
coreferences.entity_ids: 1.0alpha7.train.1225.ent2_0