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![]() H & E stain |
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Morphology Small angular atrophic muscle fibers Grouped muscle fiber atrophy Hypertrophic muscle fibers Split muscle fibers Internal nuclei |
Pyknotic nuclear clumps: Large Degenerating & Regenerating muscle fibers: Occasional |
![]() H & E stain |
![]() Esterase stain |
| Small angular muscle fibers | |
![]() H&E stain Grouped atrophy Smaller fibers may be rounded or angular Large muscle fibers are hypertrophied |
![]() H&E stain |
![]() NADH stain Large muscle fibers have coarse internal architecture Some small fibers are darkly stained |
![]() NADH stain |
![]() ATPase, pH 9.4 Small regions of grouped atrophy Large fibers are mostly type 1 Small fibers can be either type 1 or 2 |
![]() ATPase, pH 9.4 |
![]() ATPase pH 4.3 stain |