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Sixty-three white Swiss Webster mice were divided into seven equal groups. Their tolerance to pain (heat applied to the tail by a test tube containing hot water at a temperature measured by telethermometry) was assessed before and after intraperitoneal injection of (1) physiologic saline; (2) meperidine 14 micrograms X g-1; (3) amitriptyline 6 micrograms X(More)
Neuronal intestinal dysplasia type B is characterized by poor intestinal motility that usually results in constipation. Massive gastrointestinal hemorrhage is very unusual as the initial presentation in this disease entity. We report on a 3-year-and-7-month-old boy who had experienced two episodes of life-threatening lower gastrointestinal hemorrhage and(More)
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