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Cnidarians have specialized stinging cells called cnidocytes
Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i
Electrocardiography. (a) Electrodes are placed on the patient’s chest to record the electrical event
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
Successful male musical groups may owe some of their popularity among preteen girls to adrenarche.
Rubella rash in a young child. Rubella is also called 3-day measles or German measles.