Measurement of intestinal blood flow by heated thermocouple with feedback controlled heater

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colitis. Lipopolysaccharides which were extracted with phenol-water extract method from the human fetal colon were used as an antigen. The antibody in the sera of the patients with ulcerative colitis was examined by Middlebrook-Dubos method and five positive cases were obserbed in eleven patients. All of six controls containing O-type normal gave negative results. One mg of the same antigen was dissolved in 0.1ml of saline, and skin reaction was examined with intracutaneous injection into ulcerative colitis patients. The result was positive in five of the seven patients, four of which showed immediate-type reaction and one of which delayed- type reaction. In seven controls containing O-type normal, only one was equivocal. Ouchterlony test with the same antigen was negative in case of the sera of these seven patients. The correlation of the serum antibody and the skin test was extremely high.

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