tokens: Studies of the actions of platelet-activating factor have centered mainly around neutrophils , monocytes , and platelets .
folded_tokens: studies of the actions of platelet-activating factor have centered mainly around neutrophils , monocytes , and platelets .
labels: O O O O O B-protein_molecule I-protein_molecule O O O O B-cell_type O B-cell_type O O B-cell_type O