Definition: An insulating layer of fatty tissue (wrapped cell membrane) that protects nerve cells, especially their axons. Related Vocabulary: Axon (nerve fiber)NerveSymposia: Ancient DNA: New RevelationsArtificial Intelligence and AnthropogenyComparative Anthropogeny: Exploring The Human-Ape ParadoxComparative Anthropogeny: From Molecules to SocietiesThe Idea Organ