# 흰쥐 시각교차위핵(suprachiasmatic nucleus)의 출생직후 GABA성 신경종말의 분포양상

• yi, Seong-joon (College of Veterinary Medicine, Kyungpook National University)
• 이성준 (경북대학교 수의과대학)
• Accepted : 2000.11.01
• Published : 2000.12.20

#### Abstract

The present study was carried out to reveal the role of ${\gamma}$-aminobutylic acid(GABA) during postnatal period in rat. The suprachiasmatic nucleus(SCN) of hypothalamus has been known as the regulation center of circadian rhythm in the mammalians. In this study, we could find many GABAergic terminals in the SCN from day 1 to day 7 after birth. On the basis of these results, it can be said there are some kinds of inhibitory effects by GABA to the light stimulation of newborn rat.

#### Acknowledgement

Supported by : 한국학술진흥재단