before supplementation the selenium content of serum ( 5 -- 15 ng/ml ) and whole blood ( 10 -- 27 ng/ml ) , and the activity of the erythrocyte glutathione peroxidase ( 0.19 -- 2.69 u37/g hb ) , amounted to only 10 -- 20 % of normal .
C0014792
erythrocyte
C0019046
hb