this ara-a-resistant subline was deficient in the activities of two enzymes , deoxycytidine kinase and adenosine kinase , and showed a high degree of resistance to deoxyadenosine , adenosine , and pyrazofurin but not to pyrimidine analogs , such as 5-fluorodeoxyuridine or 5-fluorouridine .
C0042646
ara-a
C0001443
adenosine