Rejection
In transplantation biology, when the body’s immune system attacks transplanted cells, tissues, or organs. For example, a transplanted kidney may be rejected.
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- Relapse
The return of signs and symptoms of a disease after a remission.
- RDIs (Reference Daily Intakes)
A set of dietary references based on the Recommended Dietary Allowances for essential vitamins and minerals and, in selected groups, protein. The name “RDI” replaces the term “U.S. RDA.”
- RDA
Abbreviation for the Recommended Dietary Allowance. Or, popularly, the Recommended Daily Allowance.
- RCT
Randomized controlled trial.
- RBC
Short for red blood cells, the cells that carry oxygen and carbon dioxide through the blood. This rather remarkable feat is thanks to hemoglobin, the pigment that makes red cells (and blood) look red. The red blood cells are also known as red corpuscles or erythrocytes (literally, red hollow vessels). RBC also stands for the […]