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Cnidarians have specialized stinging cells called cnidocytes
Some male birds and mammals congregate in communal courting grounds called leks.
Diphtheria. The bacteria that cause this disease, called Corynebacterium diphtheriae, proliferate in
Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto
The upper intake manifold, often called a plenum, attaches to the lower intake manifold.
Rubella rash in a young child. Rubella is also called 3-day measles or German measles.