An abnormal particle circulating in blood, such as an air bubble or blood clot, is referred to as a(n):
A. thrombus
B. lymphocyte
C. erythrocyte
D. embolus
d
Rationale: An embolus is an abnormal particle circulating in blood, such as a blood clot or an air bubble. Anticoagulants are used to treat peripheral arterial embolus and pulmonary emboli.
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