Aoto T, Hisano S
Gen Comp Endocrinol. 1985 Dec;60(3):468-74. doi: 10.1016/0016-6480(85)90083-8.
The position of the distal retinal pigments was measured in the eyes of Palaemon which had been exposed to various light intensities (0-2000 lux) for periods up to 7 days. Electron microscopical observations of sinus glands from these animals revealed that long-term illumination (1000 lux, 7 days) resulted in almost complete degranulation of the Type 2 axon terminals, reflecting intense discharge of the granules. On the other hand, the Type 2 terminals of dark-adapted prawns showed no signs of hormone release, such as exocytosis. The results indicate that the light-adapting hormone is liberated from Type 2 terminals. The Type C cell somata in the medulla terminalis, containing granules of similar size to those in the Type 2 terminals, may be the site of synthesis of this hormone.
在将不同光照强度（0 - 2000勒克斯）下暴露长达7天的草虾眼睛中，测量了视网膜远端色素的位置。对这些动物的窦腺进行电子显微镜观察发现，长期光照（1000勒克斯，7天）导致2型轴突终末几乎完全脱颗粒，这反映了颗粒的大量释放。另一方面，暗适应对虾的2型终末未显示出激素释放的迹象，如胞吐作用。结果表明，光适应激素从2型终末释放。终髓中的C型细胞体含有与2型终末中大小相似的颗粒，可能是这种激素的合成部位。
