
Inhibitory mechanisms of heterocyclic carboxaldehyde thiosemicabazones for two forms of human ribonucleotide reductase
Keywords: RR, ribonucleotide reductase; KB-WT, human KB nasopharyngeal carcinoma wild-type cells; KB-HU, KB hydroxyurea-resistant cells; KB-GEM, KB gemcitabine-resistant cells; EPR, electron paramagnetic resonance; 3AP, 3-aminopyridine-2-carboxaldehyde thiosemicarb