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Wood first appeared in plants called progymnosperms.
Renal calculi (stones) can form in several areas within the urinary tract. When they form in the kid
Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th
Laparoscopy. A lighted endoscope specialized for insertion into the abdomen, called a laparoscope, i
Eighteen-year-olds were the largest age cohort in the first year of the war in both armies. Soldiers
Luna Park at Coney Island was a vast living theater in which strollers were both spectators and acto