Identifying spinal afferent (sensory) nerve endings that innervate the marrow cavity and periosteum using anterograde tracing Spinal afferent nerve endings did not express TH, and lacked the cylindrical morphology around blood vessels characteristic of sympathetic innervation. This approach to selective labeling of sensory nerve terminal endings will help to better identify how different sub‐populations of sensory neurons, and their peripheral nerve terminal endings, interact with bone.
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