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Black and white images of corresponding partial cross sections of vesicular acetylcholine transporter (VAChT; cholinergic) and tyrosine hydroxylase (TH; adrenergic) immunolabeling of the proximal, middle, and distal regions of the vaginal wall. The nerves immunoreactive for VAChT and TH were distinct, resulting in variable staining patterns. Note the increased density of cholinergic fibers along the length of the vagina. Bar = 100 μm.
