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The internal structures of the outer, middle, and inner ear.
The anterior pituitary is sometimes called the master gland because it secretes many hormones that r
Atherosclerosis. (a) A sectioned coronary artery that exhibits an accumulation of fatty plaque, whic
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
External and internal male genitalia.
In another solar system, a planet has an airless moon Zygo that is 4.0 × 105 m in diameter. ...