ruthenium red positive material is established in the axoplasm , axolemma , periaxonal space , major dense lines and intraperiod lines of the compact myelin , mesaxons , split peripheral myelin lamellae , schmidt-lanterman and longitudinal incisures , paranodal loops and axo-glial contacts , schwann cell cytoplasm and basal lamina , nodal extracellular matrix , desmosome-like structures , endoneural collagen .
C0015350
extracellular matrix
C0009325
collagen