A percutaneous transhepatic cholangiography (per-kew-tay-nee-us trans-hep-attic col-an-jee-og-raf-ee) is a way of looking at your bile ducts using x-rays. This test is also called PTC. Your doctor ...

A quarterly status update released Aug. 17, 2016 by the Federal Railroad Administration (FRA) “underscores the need for railroads to implement Positive Train Control (PTC) as quickly and safely as ...

THE coumarin anticoagulants depress the synthesis of four clotting factors: prothrombin; proconvertin (factor VII); Stuart factor (factor X); and plasma thromboplastin component, or PTC (factor IX).