Neuromuscular

Immune Myopathy: NXP-2 Antibody


Clusters of Necrotic & Regenerating Muscle Fibers
  Fibers in each cluster are in similar stages of necrosis or regeneration

H & E stain


Congo red stain
Necrotic Muscle Fibers: Small cluster

C5b-9 complement stain
Necrotic Muscle Fibers
  C5b-9 staining of muscle fiber cytoplasm
  NADH staiining of cytoplasm is absent

NADH stain


NADH stain
Neighboring clusters: Necrotic (Left) & Regenerating (Right) Muscle fibers

Esterase stain

VvG stain
Neighboring clusters: Necrotic (Left) & Regenerating (Right) Muscle fibers

ATPase pH 9.4 stain


Alkaline phospohatase stain
Neighboring clusters: Necrotic (Above) & Regenerating (Below) Muscle fibers

ATPase pH 9.4 stain

Acid phosphatase stain


VvG stain
Clusters of Necrotic & Regenerating Muscle fibers: Distant from vascular bundle (Lower right)

Vessels
  Artery, Large (Left): Normal structure
  Artery, Small (Center): Abnormal wall structure
    Fibril (Elastin) layer: Incomplete (White arrow)
    Connective tissue inside fibril layer
  Vein (Right; White arrow)     Pale wall inside fibril layer
    No visible lumen

VvG stain

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10/20/2021