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Figure 1 Decay sequences of radiolabeled deoxyribonucleic acid (DNA), gelatin hydrogel (GHG), and DNA combined with GHG in the hindlimb muscles of mice. Unlabeled GHG impregnated with ¹²⁵I-labeled DNA (solid line), ¹²⁵I-labeled GHG (dashed line), and ¹²⁵I-labeled DNA solution (dotted line) were injected into the hindlimb muscles.