Fig. 9. PNMT is present in few surviving adrenal medullary cells of Mash1 knockout mice at P0. Cross-section through the adrenal glands of newborn wild-type (A) and Mash1^–/– (B) mice (B). Double immunofluorescence staining for TH (red) and PNMT (green). Cells that are positive for TH and PNMT appear yellow. Scale bar: 100 µm.