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4. Berthold, C.-H. &Carlstedt, T. (1982) Myelination of S1 dorsal root axons in the cat.Journal of Comparative Neurology 209, 225–32.
5. Berthold, C.-H., Nilsson, I. &Rydmark, M. (1983) Axon diameter and myelin sheath thickness in nerve fibres of the ventral spinal root of the seventh lumbar nerve of the adult and developing cat.Journal of Anatomy 136, 483–508.