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Changes of the complement components in the sera of 13 children with treated coeliac disease were studied after gluten challenge. The levels of C 1 and C3-activator (factor B) were significantly decreased at 4 h after the challenge, as were the levels of total complement (CH 50) and the components C 1, C 4 and C 1-inactivator at 8 h. After 24 h most values returned to normal but there was another significant decrease in serum C 4 after 24 h, and for CH 50, C 1, C 2 and C 4 after 48 h.

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The results of clinical, biochemical and histological studies in 26 children with chronic hepatitis B are reported. Most cases were detected when diagnostic procedures were arranged because of non specific abdominal complaints, by routing tests after acute hepatitis or multiple transfusions, and by examination of family members. Hepatomegaly was found in half of the cases, splenomegaly in a quarter. Other clinical signs were rarely seen. Among the biochemical findings, elevated serum transaminase activities were the most reliable indicators of chronic hepatitis. There was a significant difference of the mean transaminase activities between patients with CPH and CAH. In 15 children CPH was diagnosed histologically. 9 children had CAH, 2 children showed signs of MinH.

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