Schmidt

An Illustrated Dictionary of Medicine, Biology and Allied Sciences · 1907 · p. 44

Arrow-markings of. Certain lines occasionally seen upon the axis-cylinders of nerves and supposed to be ma es of protoplasm by some and connective ti ue by others. S., Incisures of, minute fi ures in the medullary sheaths of nerves, separating the segments of Lautermann. S.'s Nodes. See AM?. S.'s Test. See Birth .