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Failure to identify 'thrombocytolysin' (a spasmogenic factor released from platelets immunoreaction) with
Abstract:
Horse platelets release an unidentified smooth muscle contracting substance after lysis by antiserum and complement. Since the active factor (thrombocytolysin) does not produce tachyphylactic response of the guinea-pig ileum it seems that it is not related to anaphylatoxins.