(A) Shh expressing DA neurons in Shh-nLZC/C; Dat-Cre mice at 12 months of age.
(B) Incidence of Shh expression in the SNpc in Shh-nLZC/C; Dat-Cre mice at 1 and 12 months of age (*p < 0.05, unpaired t-test, n=12/group, 100 cells/subject).
(C) Somatic area of Th+, Shh− - and Th+, Shh+ cells in the SNpc of Shh-nLZC/C; Dat-Cre mice (*p < 0.05, single comparison by Mann-Whitney U test; box-whisker plots for median ± 95% CI bar, 25-75 percentiles box, n=4, 20 cells/subject).