[A study of muscle fibers typing on Duchenne muscular dystrophy]

Quantitative analysis of muscle fibers typing in 15 cases of Duchenne muscular dystrophy has been done. Mean diameter, area, variability coefficient were estimated by computer. The results show that type IIC fibers were remarkably increased and type IIB fibers was deficiency in DMD. Atrophy and hypertrophy occurred in different typing fibers. The results indicated that DMD has a prominent atrophy and hypertrophy and active regenerating process.