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Summary. Hip seed extracts prepared by repeated precipitation with alcohol or trirhloracetic acid extraction and barium fractionation were observed to block: (1)The histamine liberation produced in perfused cat's paw by 48/80 and by extracts from jellyfish ( Cyanea capillata ) and the eelworm of swine ( Ascaris lumbricoides ). (2) The rupture of mast cells produced by the same three agents.
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Högberg et al. (1957) studied this question.
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