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Wood first appeared in plants called progymnosperms.
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
Arthroscopic surgery. In this illustration, the knee joint is undergoing surgery with a specialized
The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
A square matrix P is called a permutation matrix if each row and column of P contains exactly ...