| DCC | day care center; detected in colon cancer; dextran-coated charcoal; diameter of cylindrical collimat... |
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| DDc | double concave |
| PCc | periscopic concave |
| head mirror | A circular concave mirror attached to a head band, used to project a beam of light into a cavity, such as the nose or larynx, for purposes of examination and permitting binocular vision. (05 Mar 2000) |
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