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Right (black column) and left (white column) width–length ratios at 0, 8, and 24 h of mice each injected with 1 LD50 BoNT type A. Left EDL muscles were injected with 3 µL BoNT type A, and right EDL muscles were injected with 3 µL GBS. Left width–length ratios were significantly (*, P < 0.05) lower at 8 and 24 h than were right width–length ratios.
