الفهرس 
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Abstract
The aims of this study as following :1-Synthesis and characterization of lanthanum complexes containing fluoroquinolones ligands. 2- Investigation of the interaction of DNA with drugs 1,3and5 at different pH.3-Absorption and emission spectra of drugs in agueous solution under different pH.4-Investigation of the interaction of the DNA with complexes2,4and6 atdifferent pH.5-Absorption and emission soectra of complexes in aqueous solution under different pH.6-Biological activity.