LAMA2 and Duchenne muscular dystrophy: Interestingly, immunostaining for slow-twitch muscle fibers using myosin heavy chain 1A (Myh1a – F59 clone) revealed sparse detachment at the MTJ in some myotomes, similar to the early fiber detachment found in Duchenne Muscular Dystrophy (DMD) and LAMA2-related dystrophy models (Fig 3E) [38,39].