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Cell therapy has shown potential in the field of peripheral nerve repair, and research using rodents is a critical and essential step toward clinical development of this approach. Traditionally, most experimental peripheral nerve injuries are conducted in inbred Lewis or outbred Sprague–Dawley strains. However, transplantation of xenogeneic cells such as human-derived cells typically triggers rejection in these animals. An alternative approach is to use immunodeficient animals, such as athymic nude rats. The lack of functional T cells in these animals renders them more accommodating to foreign cells from a different host. Currently, no literature exists regarding sensorimotor behavioral assessment of nude rats after peripheral nerve injury. To this end, we compared the functional recovery during a 6-wk period of behavioral testing of Lewis and nude rats after unilateral sciatic nerve crushing injury. Three sensorimotor …