(A) UMAP projection of the dopaminergic dataset nuclei from the intact (non-lesioned) hemisphere. (B) UMAP projection of the dopaminergic dataset nuclei from the lesioned hemisphere. ML clusters are marked with dashed circles in A and B. (C) UMAP projection of the integrated dopaminergic nuclei dataset, color-coded for the territory IDs of the merged dataset. (D, E) Sox6 and Calb1 expression plotted in intact and lesioned nuclei, respectively. (F) Same UMAP projection as in C, with ML clusters nuclei highlighted. (G, H) Bar graphs showing the numbers and percentages of ML clusters nuclei per territory of the integrated dataset, respectively. More than 80% of ML nuclei cluster in Sox6 and Pcsk6 territories of the integrated data. (I) Mostly lesioned (ML) clusters enriched markers plotted in UMAP. (J–M) ML-enriched markers in I, detected by fluorescent RNA in situ hybridization, combined with TH and mCherry immunohistochemistry in lesioned versus untreated tissue. Scale bar = 50 µm.