The Pab Rb x human Ras-GRF1 (phosphorylated Ser916) antibody from United States Biological is a Rabbit Polyclonal antibody. This antibody recognizes Homo Sapiens, Human, Mouse, and Rat antigen. The Pab Rb x human Ras-GRF1 (phosphorylated Ser916) antibody has been shown to work in the following applications: Immunohistochemistry.