title: Vacutainer for collection of citrated blood in tests for syphilis; recalcification of plasma by gypsum; inactivation of serum with clots.
authors.forename: R D
authors.initials: RD
authors.lastname: BARNARD
authors.forename: L
authors.initials: L
authors.lastname: VAN HALA
mesh_terms: D001769:Blood; D002133:Calcium Sulfate; D002951:Citrates; D006801:Humans; D010949:Plasma; D044967:Serum; D013587:Syphilis; D013588:Syphilis Serodiagnosis; D013927:Thrombosis
chemical_list: D002951:Citrates; D002133:Calcium Sulfate