C57BL/6 mouse splenocytes were stained with CD4 Monoclonal Antibody, PE (Product # 12-0041-82) and 0.125 µg of Rat IgG1 lambda Isotype Control, FITC (Product # 11-4301-85) (left) or 0.125 µg of CD25 Monoclonal Antibody, FITC (right). Cells in the lymphocyte gate were used for analysis.
Supplier Page from Thermo Fisher Scientific for Rat IgG1 kappa FITC Isotype Control