10-11 ). The present study was performed to examine whether or not there is also ChE activity in lamellated corpuscles, which are presumed to be mechanoreceptors in the oral regions. Lamellated corpuscles were histochemically identified in the rat lip. The ChE activity of these corpuscles was examined by light and electron microscopy, and the ultrastructural localization of the enzyme reaction products was described.
MATERIAL AND METHODSLips of fifteen Wistar rats were used in the present study. The animals were anesthetized by intraperitoneal injection of Nembutal (sodium pentobarbital, 50mg/kg body weight).Histochemicai procedures -Animals were fixed by intracardiac perfusion with 50ml of fixative containing 1.25% glutaraldehyde and 4% paraformaldehyde in a 0.065M phosphate buffer (pH 7.4) at room temperature.Lip tissues were dissected and immersed in the same fixative for 1-2 hrs at room temperature. After fixation, the * Professor Titular