re and function seen between mammalian TLRs and the Drosophila transmembrane protein Toll. TLRs是呈现在细胞表面和胞内间室的跨膜蛋白，用以识别病原体呈现的病原相关分子模式（Pathogen-associated molecular patterns，PAMPs），然后启动制造先天和获得性免疫所需的细胞因子的信号。 The various TLRs exhibit different patterns of expr