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The anterior pituitary is sometimes called the master gland because it secretes many hormones that r
Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp
In this painting evangelist George Whitefield appears to be cross-eyed. This is no fault of John Wol
Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ...
A Gaucher cell showing accumulated fat stored in structures called lysosomes