tracerA substance (such as a radioisotope) used in imaging procedures.
transformation(TRANZ-for-MAY-shun) In medicine, the change that a normal cell undergoes as it becomes malignant.
TransmutationThe transformation of one element into another by a nuclear reaction.
transportTo move or be conveyed from one place to another. In the context of environmental contamination, a contaminant is transported from one location to another…