Black pigment at dermo-epidermal junction is melanin
Note the external teeth
I gave this ab ( lot GR135943) a bad abreview because, imho, too many nuclei were positive.
However, I recently tested a new batch ( GR 270979-1) and it is excellent ( image shown).
T/S through spinal cord
Strong punctate positivity in the extracellular areas ( seems to be: could be membraneous?).
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