title: A simply prepared, standardized, and relatively stable thromboplastin extract for estimation of prothrombin time.
authors.forename: S
authors.initials: S
authors.lastname: SHAPIRO
authors.forename: M
authors.initials: M
authors.lastname: WEINER
authors.forename: H F
authors.initials: HF
authors.lastname: LUDDECKE
authors.forename: R L
authors.initials: RL
authors.lastname: KROC
authors.forename: E J
authors.initials: EJ
authors.lastname: WHITE
mesh_terms: D006801:Humans; D011516:Prothrombin; D011517:Prothrombin Time; D012015:Reference Standards; D012044:Regression Analysis; D013925:Thromboplastin
chemical_list: D011516:Prothrombin; D013925:Thromboplastin