Granzyme K Activates Protease-Activated Receptor-1 Cooper, Dawn M. ; Petchkovsky, Dmitri V. ; Hackett, Tillie L. ; Knight, Darryl A. ; Granville, David J. Abstract Publication: PLoS ONE Pub Date: June 2011 DOI: 10.1371/journal.pone.0021484 Bibcode: 2011PLoSO...621484C