 Figure 4. Restored p53 activity by nutlin3a impairs MGC formation and inos dysregulation A Representative images of unstimulated BMMΦ from wt and p53-/- mice at day 6 with hemacolor staining (left), LP stimulation for 6 days and quantification for MGC formation by hemacolor staining (right). Depicted are means ± SEM of 3 independent experiments; scale bar, 50µm. 