Department of Chemistry and Biochemistry;
Faculty of Medicine;
Trakia University;
Stara Zagora;
Bulgaria;
Department of Physiology;
Pathophysiology and Pharmacology;
Faculty of Medicine;
Trakia University;
Stara Zagora;
Bulgaria;
Laboratory of Oncopharmacology;
National Cancer Institute;
Sofia;
Bulgaria;
Doxorubicin; Bleomycin; Spin-Labelled; Superoxide; Dismutase; Catalase; Lipid; Peroxidation;