Histochemical observations on the giant neurosecretory cells of the thoracic ganglion of the adult and juvenile crabs, Potamon magnum magnum (Pretzman)
Rashan, L.J.; Gorgees, N.S.
Acta Biologica Academiae Scientiarum Hungaricae 28(3): 299-310
1977
ISSN/ISBN: 0001-5288 PMID: 79282 Document Number: 119563
Giant neurosecretory cells in the thoracic ganglion of the adult and juvenile crab, P. magnum magnum were histochemically investigated. The secretion was mainly proteinaceous in nature, containing considerable amounts of acid mucosubstances, sulfate esters, lipids and a little carbohydrate but no glycogen. The nature of the proteinaceous neurosecretory material in the adult crab was tested. The neurosecretory material of these cells contained moderate amounts of sulfhydryl groups and small amounts with disulfide bonds. No trace of tyrosine was observed. Neurosecretory granules were associated with considerable amounts of cytoplasmic RNA. Generally, stronger reactions were obtained in summer and winter than at other seasons.