Flow cytometric analysis of Jurkat cells using p44/42 MAPK (Erk1/2) (137F5) Rabbit mAb (Alexa Fluor<sup>®</sup> 647 Conjugate) (solid line) compared to concentration-matched Rabbit (DA1E) mAb IgG XP<sup>®</sup> Isotype Control (Alexa Fluor<sup>®</sup> 647 Conjugate) #2985 (dashed line).