The Pab Rb x human CD4 (T-cell Surface Glycoprotein CD4, T-cell Surface Antigen T4/Leu-3) (MaxLight 550) antibody from United States Biological is a Rabbit Polyclonal antibody to CD4. This antibody recognizes Homo Sapiens, and Human antigen. The Pab Rb x human CD4 (T-cell Surface Glycoprotein CD4, T-cell Surface Antigen T4/Leu-3) (MaxLight 550) antibody has been shown to work in the following applications: Western Blot.