There are 4 Frizzled 4 protein produced in house with high quality which are covering various species. Among these Frizzled 4 proteins, there are 2 Human Frizzled 4 protein, 2 Rat Frizzled 4 protein. All these Frizzled 4 protein are expressed by different host cells. 4 Frizzled 4 proteins are expressed by HEK293 Cells . These Frizzled 4 proteins are produced with different tags, such as His Tag, hFc Tag.