the coagulant of normal human saliva has been identified as tissue factor ( thromboplastin , tf ) by virtue of its ability to cause rapid coagulation in plasmas deficient in first-stage coagulation factors and to activate factor x in the presence of factor vii and by virtue of the fact that its activity is expressed only in the presence of factor vii and is inhibited by an antibody to tf .
C0005778
coagulation
C0015502
factor vii