Thymidine Health Dictionary

the proportion of cells in a sample of tissue that are producing DNA. Cells that are synthesizing DNA take up tritiated thymidine, which shows up on an autoradiograph (see autoradiography) of the sample....  labelling index

n. a compound consisting of a nitrogen-containing base (a *purine or *pyrimidine) linked to a sugar. Examples are *adenosine, *guanosine, *cytidine, *thymidine, and uridine.... nucleoside