Radiation Oncologist(RAY-dee-AY-shun on-KAH-loh-jist) A doctor who specializes in using radiation to treat cancer.
Radioimmunoassay(Abbreviation: RIA). An assay based on the use of a radioactively labelled antibody, where the amount of radiation detected indicates the amount of target…
Red Blood CellsCells that carry oxygen throughout the body (also called erythrocytes).
Regenerative medicineMedical interventions that aim to repair damaged organs, most often by using stem cells to replace cells and tissues damaged by aging and by disease.
Reproductive cloningSomatic cell nuclear transfer used for the production of a fetus and delivery of a live offspring that is genetically identical the donor of the somatic…
Retinoic acid(REH-tih-NOH-ik A-sid) A form of vitamin A that is made by the body, and can also be made in the laboratory.
Ribonucleic acid (RNA)A chemical similar to a single strand of DNA. In RNA, the letter U, which stands for uracil, is substituted for T in the genetic code.
RibosomeCellular organelle that is the site of protein synthesis during translation. See Organelle, Translation.