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tdTomato expression in serial coronal sections of the medulla in 5-HT3-tdT. A–T, Data presented from rostral to caudal, with labeling for the position relative to obex. The intensity of native tdTomato expression is shown in rainbow pseudocolor. The following structures are identified: nTS, Pa5, Sp5, and TS. Scale bar, 400 μm. Data are representative of n = 6 animals.
