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Representative photomicrographs of the ventral horn of the L6 Intact (A) and L6 Avulsed (B) sides as well as the S1 Intact (C) and S1 Avulsed (D) sides in a Rhesus monkey at 6 months after a unilateral L6-S2 VRA injury. The sections have been processed for ChAT immunoreactivity. Note that the avulsed side appears more sparsely populated by cholinergic motor neurons.
