抄録
The author (1959) found that when the cysticercoids of Raillietina kashiwarensis entered the digestive tract of the chicken, the digestive enzyme, especially trypsin, played an important role in causing the excystment of the cysticercoids. But on the other hand, it is necessary to examine what effect is exerted by the osmotic pressure in the alimentary tract of the chicken upon the excystment.
Up to the present time, as to the excystment of the tapeworm bladderworm, only the effect of the digestive juice has been examined but no study on the effect of the osmotic pressure upon the excystment has practically been made except the author (1958) who made it clear that the osmotic pressure does not give any important influence in causing the excystment of Raillietina echinobothrida cysticercoids.
So, the author examined in vitro what role the osmotic pressure in the alimentary tract of the chicken plays in causing the excystment of the cysticercoids of Raillietina kashiwarensis.
