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Gutiérrez G, Fitzgerald JS, Pöhlmann T, Hoppe I, Markert UR. Comparative Effects of l‐Tryptophan and 1‐Methyl‐Tryptophan on Immunoregulation Induced by Sperm, Human Pre‐implantation Embryo and Trophoblast Supernatants. American J Rep Immunol. 2003 Sep 09;50(4):309–15. doi: 10.1111/j.1572-0241.2004.40012.x-i1. |