There are 4 C5a protein produced in house with high quality which are covering various species. Among these C5a proteins, there are 2 Human C5a protein, 2 Mouse C5a protein. All these C5a protein are expressed by different host cells. 3 C5a proteins are expressed by E. coli , 1 C5a proteins are expressed by HEK293 Cells . These C5a proteins are produced with different tags, such as His & FLAG Tag.