Meuth, M Selection of Cells Defective in Pyrimidine (TK(-)) and Purine (APRT (-) and HPRT (-) Salvage : Development of Host Strains Appropriate for Transfection. [electronic resource] - Methods in molecular biology (Clifton, N.J.) 1991 - 257-67 p. digital Publication Type: Journal Article ISSN: 1064-3745 Standard No.: 10.1385/0-89603-178-0:257 doi