Abstract
The intestinal movement, when incurred, was observed through the abdominal window of the rabbit sensitized with egg-white albumin or horse serum. Simultaneously, the supersensitiveness of the excised intestine and the fluctuation in the blood antibody level was investigated. The following results were thus obtained.
1. The intestinal movement in vivo at the time when the corresponding antigen was given again parentally to the parentally sensitized rabbit was found accelerated and the degree of the acceleration was considered roughly in parallel with the blood antibody level.
2. An accelerated intestinal movement was observed also when the corresponding antigen was given again orally to the parentally sensitized rabbit.
3. In some cases of orally sensitized rabbits, acceleration in vivo was observed when orally incurred, but not in some other cases.
4. When parentally incurred a remarkable lowering in the blood antibody level was observed, but, when orally incurred, no fluctuation in the blood antibody level was recognized.
5. When incurred, the acceleration of the intestinal movement and the intestinal hyperemia were caused rouguly in parallel.
6. No significant difference in the pattern of the establishment of sensitization according to antigens was noted
