(Encyclopedia) cat's-eye, gemstone that displays a thin band of reflected light on its surface when cut as a cabochon. Its name is derived from its supposed resemblance to the eye of a cat. The…
(Encyclopedia) CAT scanCAT scankăt [key] [computerized axial tomography], X-ray technique that allows relatively safe, painless, and rapid diagnosis in previously inaccessible areas of the body; also…
—By Christine Frantz That kitty sitting on your lap can now boast of her own family history. A research team, lead by Warren E. Johnson of the National Cancer Institute, studied the DNA of 37…
