Flow cytometric analysis of HeLa cells using β-Actin (D6A8) Rabbit mAb (solid line) compared to concentration-matched Rabbit (DA1E) mAb IgG XP<sup>® </sup>Isotype control #3900 (dashed line). Anti-rabbit IgG (H+L), F(ab')<sub>2</sub> Fragment (Alexa Fluor<sup>®</sup> 488 Conjugate) #4412 was used as a secondary antibody.