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(A) Hyaluronic acid conjugated with ciprofloxacin to form Hyaluronic acid-Ciprofloxacin (HA-CIP) conjugate, (B) Size exclusion chromatography of HA and HA-CIP conjugate. The decrease in the retention time (RT) of the conjugate peak as compared to HA confirmed the synthesis of the conjugate. (C) FTIR spectra of CIP (a), HA (b) and HA-CIP (c).
