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Single-neuron resolution mapping of dopaminergic connectivity across development, adulthood, and degeneration
Using a novel intersectional genetic strategy for sparse neuronal labeling, Grossouw, Heijmink, et al. reconstruct individual midbrain dopamine neurons throughout development, adulthood, and degeneration. They reveal previously unrecognized morphological diversity, developmental wiring principles, and subtype-specific connectivity, providing a comprehensive framework for understanding how dopaminergic circuits are assembled, maintained, and disrupted.