The Pab Rb x human RPS21 (40S Ribosomal Protein S21, Ribosomal Protein S21) antibody from United States Biological is a Rabbit Polyclonal antibody. This antibody recognizes Homo Sapiens, and Human antigen. The Pab Rb x human RPS21 (40S Ribosomal Protein S21, Ribosomal Protein S21) antibody has been shown to work in the following applications: Western Blot.