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The Dall sheep, Ovis dalli, a mountain sheep of far northern North America, was the subject of one o
Cystostomy. An artificial opening is made through the urinary bladder wall during this procedure. As
In 2009, historian Woody Holton described how Abigail Adams shrewdly invested in the Continental Con
W. A. Rogers’s engraving, “Out of the Game,” showed one injured boy tending to another. It appeared
A cerebral angiogram of a healthy human subject.
Bio Essay