Continuation of Fig.2., radioactive ISH demonstrates Pomc mRNA in the caudal part of the tanycyte region in 5 adult rats with different expression levels in tanycytes of the third ventricle (3v) and non-neuronal cells of the median eminence (ME) and infundibular (pituitary) stalk (Inf). (A, B) low, (C) intermediate, (D, E) high Pomc mRNA expression in tanycytes. A, B and D are male, C and E are female rats, between 8-10 weeks of age. The infundibular stalk appears at different rostro-caudal levels due to differences in the plane of sectioning. Scale bar: 200μm.