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serum prothrombin conversion accelerator

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accelerator

 [ak-sel´er-a″ter] (L.)
an agent or apparatus that increases the rate at which something occurs or progresses.
serum prothrombin conversion accelerator (SPCA) factor VII, one of the coagulation factors.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

se·rum pro·throm·bin con·ver·sion ac·cel·er·a·tor (SPCA),

obsolete term for factor VII.
Farlex Partner Medical Dictionary © Farlex 2012

factor VII

A coagulation factor that forms a complex with thromboplastin and calcium to activate factor X.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

fac·tor VII

(fak'tŏr)
A plasma factor in blood coagulation, forms a complex with tissue thromboplastin and calcium to activate factor X; accelerates the conversion of prothrombin to thrombin, in the presence of tissue thromboplastin, calcium, and factor V.
Synonym(s): cothromboplastin, proconvertin, serum accelerator, serum prothrombin conversion accelerator.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

fac·tor VII

(fak'tŏr)
In blood clotting, forms a complex with tissue thromboplastin and calcium to activate factor X.
Synonym(s): prothrombinogen.
Medical Dictionary for the Dental Professions © Farlex 2012
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