TF and acute promyelocytic leukemia: Several studies strongly suggest that microvesicles (MVs) harbouring TF may have a procoagulant role in promoting VTE and possibly disseminated intravascular coagulation (DIC) commonly seen in acute promyelocytic leukaemia (APL) Objectives: The aim of this study is to assess the capacity of untreated APL cells to shed procoagulant MVs.