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Profiles of serum T4 levels (A) and T3 levels (B) in WT, D2KO, and D3KO mice between birth and P30. Profiles of D2 and D3 activities during the same period (C). D2, type 2 deiodinase; D3, type 3 deiodinase; P30, postpartum day 30; WT, wild-type.
