The Rabbit anti-IL-21 Antibody from MyBioSource.com is a Rabbit Polyclonal antibody to IL21, and Interleukin 21. This antibody recognizes Homo Sapiens, Human, and Rat antigen. The Rabbit anti-IL-21 Antibody has been shown to work in the following applications: Immunofluorescence, Immunohistochemistry, and Western Blot.