Cell Production and Migration in the Epithelial Layer of the Cornea

Tritium-labeled thymidine is used in the study of cellular desoxyribonucleic acid (DNA) synthesis. Thymidine is incorporated into DNA during the premitotic coupling stage of a new cell and this process normally leads to cell division. Once the labeled thymidine is incorporated into the nucleus it is retained in a polymerized form which undergoes very slow turnover throughout the life of the nucleus. This radioactive label can be qualitatively...