Isolation of deoxycoformycin-resistant cells with increased levels of adenosine deaminase.


Deoxycoformycin (dCF) is a specific inhibitor of adenosine deaminase (ADA). Rat hepatoma cells deficient in adenosine kinase and growing on adenosine as the sole carbon source are sensitive to the lethal action of dCF. Mutants resistant to dCF arise spontaneously with a frequency of 1.7 x 10(-6). This frequency is increased to 2.6 x 10(-5) by prior… (More)


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