Confocal immunofluorescent analysis of HeLa cells, grown in phenol red-free media containing 5% charcoal-stripped FBS for 2 days and either untreated (left) or dexamethasone-treated (100 nM, 2hr; right), using Glucocorticoid Receptor (D8H2) XP® Rabbit mAb (green). Actin filaments were labeled with DY-554 phalloidin (red).