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Results of soft tissue x ray examination of the hind paw of AA rats. The swelling in the paw was assessed by soft tissue x ray examination on day 21 as described in "Materials and methods". (A) Normal rat control; (B) PLGA-nanosteroid (100 µg, intravenously (IV)) treated AA rat; (C) BSP (100 µg) treated AA rat; (D) vehicle-PLGA nanoparticle treated AA rat.
