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Ret protects nigral DA neurons against α-synuclein toxicity in vivo. A, Stereological counts of substantia nigra TH+ neurons (left) performed on TH-immunostained midbrain sections (right). B, Optical densitometry of the striatal TH+ innervation (left) performed on TH-immunostained striatal sections (right). C, Optical densitometry of the striatal rat α-synuclein+ innervation. Scale bars: 1 cm. *p < 0.05.
