건조상태가 개구리(Rana nigromaculata) 피부 장액선에 미치는 영향에 대한 조직화학적 연구

Histochemical Study on the Serous Gland of Frog(Rana nigromaculata) Skin under Dry Conditions

1. 개구리 피부 장액선의 분비과립은 중성과 약산성점액질이 존재한다. 2. 피부 장액선의 분비과립은 건조상태에서 현저히 감소하며 성분별로 점액질을 볼 때 중성점액질이 산성점액질보다 더 심한 영향을 받는다. 3. 장액선의 내강내에 있는 분비과립내 점액성분은 건조상태의 노출시간에 따라 성분상의 변화는 없다. 4. 이상과 같은 현상은 체항상성을 유지 하기 위한 생체적응현상의 일단이라고 생각한다.

This study was performed in order to know the histochemical changes of mucosubstances in granular secretions of the serous gland under normal and dry conditions. The frogs were collected near Jinju and the experimental groups were retained under dry conditions for 24, 48, 72 and 96 hours to make a comparison with normal group. The results obtained were as follows: 1. The secreting granules in serous gland of the frog skin contained neutral and weakly acidic mucosubstances. 2. the secreting granules in serous gland of the frog skin were significantly decreased under dry conditions, as is evident from the histochemical properties. The neutral mucosubstances were decreased more than acidic mucosubstances. 3. Histochemical compositions of the mucosubstances of secreting granules in the lumen of the serous gland were not changed according to dry condition.