| 摘要 |
<p>A method for downregulating IgE levels is described. The method involves administering to a patient an IgE downregulating effective amount of a peptide having the formula f-Met-Leu-X, wherein X is selected from the group consisting of Tyr, Tyr-Phe, Phe-Phe and Phe-Tyr.</p> |
