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the outermost nucleated cytoplasmic layer of the Schwann cells that surrounds the axon of a neuron. It forms the outermost layer of the nerve fibre in the peripheral nervous system.
simple epithelium with elongated, cells that lines the stomach, small intestine, urethra, vas...
the area that occurs between the high water and low water marks. It is exposed to the air at low...
the practice and science of classification. This is the part of systematics that is only...