... Tetrahedron Letters. Volume 29, Issue 24, 1988, Pages 2899–2902. Cover image Cover image. ... kg −1 ). Blood was collected via a catheterised carotid artery into 0.1 vol 77 mM Na 2 EDTA (pH7) and centrifuged at 140 g for 15 minutes to sediment erythrocytes. ...