Fig 9. Seasonal differences in TH-ir area but not cell number in the dopaminergic periventricular posterior tuberculum (TPp).

(A, B) Large, pear-shaped TH-ir neurons and thick processes are seen just dorsal and lateral to the paraventricular organ (PVO) and medial to the medial forebrain bundle (MFB) along the midline in transverse section through the diencephalon. Data in C are expressed as number of TH-ir neurons per section (mean ± SE). (D) TH-ir area including cells and processes are quantified per unit area (143,139 μm²). Mean TH-ir area for animal in A = 6205.1μm²; B = 2658.4 μm². **p = 0.001. Scale bar = 100 μm.