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Oral Pathology
Prothrombin time (PT) is a measure of the blood's clotting ability. In dentistry, a PT level of 20% below normal is often considered a threshold for increased risk of bleeding during surgical procedures such as tooth extraction. At this level, the pa
Physiology
Angiotensin I is NOT a hormone secreted by the kidney; it is produced from angiotensinogen in the liver and converted to angiotensin II by the kidneys.