作者对人奶、牛奶及配方奶中三碘甲状腺氨酸(T_3)和甲状腺素(T_4)的含量进行了测定,同时检测了奶牛血清中的T_3和T_4。 取16位产后5天健康母亲的奶标本,16头奶牛的奶和血清标本同时收集。上述标本均在早晨收取。16份喂养婴儿的配方乳样品。标本贮存于-20℃, The authors measured the contents of triiodothyronine (T_3) and thyroxine (T_4) in human milk, milk and formula milk, and detected the levels of T_3 and T_4 in the milk serum. Take 16 milk samples of healthy mothers 5 days postpartum, milk samples of 16 cows and serum samples collected at the same time. The above specimens are collected in the morning. Sixteen samples of formula for feeding infants. Specimen stored at -20 ℃,