Dignac, M A new chronometric assay to determine plasma antifactor Xa activity which is insensitive to the antithrombin activity of low molecular weight heparins. [electronic resource] - Nouvelle revue francaise d'hematologie 1994 - 545-9 p. digital Publication Type: Journal Article Subjects--Topical Terms: Antibodies--bloodAntithrombins--pharmacologyChromogenic CompoundsChronobiology PhenomenaFactor Xa--immunologyHeparin, Low-Molecular-Weight--pharmacologyHumans