Correlation of combinations between Angelicae Sinensis Radix and Carthami Flos Correlation of combinations between Angelicae Sinensis Radix and Carthami Flos Experimental studies on in vivo anticoagulant activity of recombinant hirudin in rabbits Study on enzymolysis process for Whitmania pigra Quality evaluation of Bletillae Rhizoma based on hemostatic biopotency Effects of active fraction from Phyllanthus urinaria on coagulation system