factor XII
- noun
- /ˈfæktər twɛlv/
- Specialized
- Doctors measured the levels of factor XII to investigate the patient's unexplained bleeding.
Examples
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A deficiency in factor XII can lead to bleeding disorders.
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The factor XII plays a role in initiating the blood coagulation cascade.
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A deficiency in factor XII can lead to abnormal clotting test results.
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What role does factor XII play in the coagulation process?
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The factor XII plays a crucial role in blood coagulation by activating other proteins.
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Patients with low levels of factor XII often experience prolonged bleeding after surgery.
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To understand clotting disorders, doctors often analyze the function of factor XII in blood samples.
Synonyms
A protein in blood that helps form clots
Surface Forms
Morphology
The form 'factor XII' is compositionally clear: a learner who knows 'factor' and the Roman numeral 'XII' can infer it denotes the twelfth factor (i.e. a numbered item), so the structural naming is transparent. However, the specific biomedical referent (a coagulation protein/Hageman factor) is specialized domain knowledge not derivable from the constituents, so full meaning is not predictable without prior exposure.
Etymology
Factor XII was named after a patient called Hageman and given the number 12 written as XII when doctors listed the blood-clotting proteins. So today factor XII means 'a blood protein' that helps 'start clotting'.