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Cnidarians have specialized stinging cells called cnidocytes
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
The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
The illusory bands visible in this figure are often called Mach bands, although Mach used a ...
Cancer cells can move to new locations in the body, a process called metastasis