the effect of l-thyroxine on the suppression of serum thyroglobulin levels appeared to be dose-dependent , as newborns from experimental criterium group a ) ( defined above ) showed no suppression of serum thyroglobulin levels when under partial substitution with l-thyroxine ( median 84 micrograms/l ) , whereas those in group b ) , i.e . with full l-thyroxine substitution showed a noticeable suppression of serum thyroglobulin ( median 27 micrograms/l ) .
C0021289
newborns
C0028128
no