| labile factor | <chemical> Heat- and storage-labile plasma glycoprotein which accelerates the conversion of prothrombin to thrombin in blood coagulation. Factor v accomplishes this by forming a complex with factor xa, phospholipid, and calcium (prothrombinase complex). Deficiency of factor v leads to owren's disease. Chemical name: Blood-coagulation factor V (12 Dec 1998) |
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| labile hypertension | Frequently changing levels of elevated blood pressure. (05 Mar 2000) |
| labile pulse | Frequent changes in pulse rate. (05 Mar 2000) |