Contralateral: Of or pertaining to the other side. The opposite of iposilateral (the same side). For example, a stroke involving the right side of the brain may cause contralateral paralysis of the left leg.
Contrast: Short for “contrast media.” Contrast media are X-ray dyes used to provide contrast, for example, between blood vessels and other tissue.
- Contrast nephropathy
Contrast nephropathy: A form of acute renal failure that starts soon after administration of contrast media (dye) for X-rays. The disorder usually runs a benign course and only rarely requires recourse to dialysis.
- Contrast sensitivity, visual
Contrast sensitivity, visual: The ability to perceive differences between an object and its background.
- Control (genetic)
Control (genetic): The control of gene expression. Genetic control may be on the transcriptional or translational level. Transcriptional control works by controlling the number of RNA transcripts of a region of DNA, indirectly controlling protein synthesis. Translational control of protein synthesis works by regulating the step of translating RNA into protein.
- Control (research)
Control (research): In research, control subjects or control procedures permit comparison with experimental results. The first controlled clinical research was probably done in 1875 by the British naval surgeon James Lind who, on board the HMS Salisbury, gave sailors with scurvy either oranges or lemons or cider or vinegar or nutmeg (or another treatment) and […]