Nature and distribution of neurosecretory cells of the reptilian brain

A study of the nature and distribution of the neurosecretory cells in the brains of Lissemys punctata (Bonn.), Tropidonotus piscator (Schneid.), Calotes versicolor (Daud.), Riopa albopunctata (Gray), Sitana ponticeriana(Cuv.), Hemidactylus Brooki (Gray), and Hemidactylus leschenaulti (Dum. & Bibr.), has been attempted.The secretory cells are located as distinct groups and are distributed in two different parts of the diencephalon. They are a) the paraventricular nucleus and b) the supraoptic nucleus.In the diencephalon concentrations of secretory granules have been observed in the neurohypophysis, infundibular stalk and towards the base of the paraphysis.Examination of live cells revealed the spheroidal components in the cytoplasm.