GWEN SHOCKEY / SCIENCE PHOTO LIBRARY GWEN SHOCKEY / SCIENCE PHOTO LIBRARY
Illustration of a normal vein and ones with deep vein thrombosis (DVT) and embolus. An embolus is any detached, traveling intravascular mass carried by circulation, which is capable of clogging arterial capillary beds. Deep vein thrombosis, or deep venous thrombosis, is the formation of a blood clot (thrombus) in a deep vein, predominantly in the legs.
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