Yunus Emre DNÇASLAN
In this study, neural complex variations were analyzed in six Ascidian species collected from ‘?zmir Bay’. Neural complexes were examined under light microscope and the results were compared with results of other available neural complex studies. According to this study, variations among these six species were determined in cerebral ganglion structure and position, ganglionic capsule frame, ganglionic neurosecretion cells’ distribution and contents of neural gland.