The neurosecretory cells of the cerebral ganglia and the nerve chain in the isopod crustacean Asellus aquaticus L. Cyclic variations in the beta type cells as a function of reproduction]

Asellus aquaticus L. cerebral ganglions and nervous cord contain seven types of neurosecretory cells; two of these are similar to Malacostraca beta and alpha cells. Female beta cells are the seat of cyclic acidophil variations which are connected to ovocyte growing; this acidophil secretion is superimposed on the basophil constant secretion in male and female beta pericaryons.