we investigated in the 3 patients ( outside of the acute phase of the hus ) and in 12 other first degree relatives complement components ( c3 , c4 , c1q , factor b ) , coagulation factors ( i.e. , antithrombin iii , f viii , protein c ) prostacyclin regulating plasma factor and vitamin e levels : all results were normal .
C0009498
complement
C0033453
factor b