both plasma and serum from children with the typical epidemic form of hus had low or undetectable mitogenic activity ( median for plasma 1.0 , range 0-5.9 u/ml , p less than 0.001 ; median for serum 1.85 , range 0-23.8 u/ml , p less than 0.005 ) .
C0032105
plasma
C0229671
serum