Dernouchamps J P, Vaerman J P, Michiels J, Heremans J F
Ophthalmologica. 1975;170(1):72-83. doi: 10.1159/000307163.
A study of transferrins in serum, aqueous humour, and vitreous in the rabbit suggests that the three proteins are immunologically identical. Electrophoretic and enzymatic analyses indicated that the serum and aqueous transferrin, as well as an important part of that of the vitreous, have two residues of sialic acid per molecule. The remainder of the vitreous transferrin contains little or no sialic acid. The transfferin level in the ocular media appears to depend partly on a local synthesis in the posterior segment; this is confirmed by a study of the specific activity of 125-I transferrin after intravenous injection of this labelled protein.
一项针对家兔血清、房水和玻璃体中转铁蛋白的研究表明，这三种蛋白质在免疫学上是相同的。电泳和酶分析表明，血清和房水中的转铁蛋白以及玻璃体中转铁蛋白的重要部分，每个分子含有两个唾液酸残基。玻璃体中转铁蛋白的其余部分几乎不含或不含唾液酸。眼内介质中的转铁蛋白水平似乎部分取决于后段的局部合成；静脉注射这种标记蛋白后对125-I转铁蛋白比活性的研究证实了这一点。
