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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.
also known as sodium hydrogen carbonate. It is a crystalline white solid that usually appears as...
a prolonged period of low rainfall which has a negative effect on plant, animal and human life...
(also called yellow cartilage) type of cartilage that contains many yellow elastic fibres lying...
meristem that produces a layer of bark on the outer surface of a plant.