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Lampreys (sometimes also called lamprey eels) are a family of jawless fish
Charles Darwin may be dead and gone but a recent write-in campaign has pitted him against Republican
Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp
Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event
Diphtheria. The bacteria that cause this disease, called Corynebacterium diphtheriae, proliferate in
In 2008, the U.S. economy suffered a gaping wound as several trillion dollars were ripped out of it.