Crossword clue: a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers

The most common answer is myelin (6 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

myelin 6 letters wn-def

a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers

myeline 7 letters wn-def

a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers