Thymidine(redirected from dThd)
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a natural organic compound, a nucleoside consisting of the pyrimidine base thymine and the carbohydrate deoxyri-bose. Thymidine is made up of acicular crystals that are readily soluble in water. With respect to chemical properties, it is a weak base. Thymidine is present in all living cells as a constituent of deoxyribonucleic acid (DNA). Thymidine tagged with radioactive tritium is extensively used in laboratories to study DNA biosynthesis and the repair of DNA after injury.