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Long‐Term Degeneration and Regeneration of the Rabbit Facial Nerve Blocked with Conventional Lidocaine and Bupivacaine Solutions

The alterations due to the long‐term degeneration and regeneration of the rabbit facial nerve were investigated. The facial nerve was blocked with conventional lidocaine and bupivacaine solutions. The rabbits were sacrificed and facial nerves were removed 2, 4, 6 and 8 weeks after the administration of normal saline, lidocaine and bupivacaine. The samples were then processed for electron microscopic observation.