Investigations on day-night differences of vesicle densities in synapses of the rat suprachiasmatic nucleus
@article{Croenlein1990InvestigationsOD,
title={Investigations on day-night differences of vesicle densities in synapses of the rat suprachiasmatic nucleus},
author={Jens Croenlein and Stefan Reuss and Lutz Vollrath},
journal={Neuroscience Letters},
year={1990},
volume={114},
pages={167-172}
}The present study was conducted to test whether the well-known circadian alterations in physiological and metabolical parameters of the hypothalamic suprachiasmatic nucleus (SCN) are accompanied by day-night differences in the number of vesicles in intrinsic synapses of the nucleus. Two groups of 5 adult male rats each were killed at mid-light or mid-dark, respectively, by perfusion with Karnovsky's fluid. The SCN were removed and processed for routine electron microscopy. In medial parts of… CONTINUE READING