title: The inhibitory properties of plasma against activated plasma thromboplastin antecedent (factor XIa) in hereditary angioneurotic edema.
mesh_terms: D000293:Adolescent; D000328:Adult; D000799:Angioedema / Q000097:blood* / Q000201:enzymology; D002648:Child; D002675:Child, Preschool; D003165:Complement System Proteins; D004950:Esterases; D005172:Factor XI / Q000037:antagonists & inhibitors*; D005260:Female; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000097:blood; D008297:Male; D008722:Methods; D008875:Middle Aged
chemical_list: D003165:Complement System Proteins; D005172:Factor XI; D004950:Esterases