Effect of 3 months of treatment on either mdx or C57BL10 diaphragm specific force. Two-month-old mdx or C57BL10 mice were treated by daily subcutaneous injection with the indicated compound for 3 months and at the end of treatment, the diaphragms were removed and evaluated for force production. MDX Time 0, 2 month old mdx mice before treatment. MDX Vehicle, mdx mice treated for 3 months with vehicle. MDX PG-873637, mdx mice treated for 3 months with 30 ug/kg of PG-873637. C57BL10 Time 0, 2 month old C57BL10 mice before treatment. C57BL10 Vehicle, C57BL10 mice treated for 3 months with vehicle.