normal urinary concentrations were : fsc 344 +/- ( sd ) 208 ng/ml ( n = 120 ) , siga 1,874 +/- 1,133 ng/ml ( n = 123 ) and nonsecretory iga , depending on the way of standardization , 712 +/- 699 ( n = 56 ) or 878 +/- 732 ng/ml ( n = 51 ) .
C0036538
fsc
C0020838
siga