contains the mid material of inflammation
| Front | Phagocytosis stages |
| Back | 1. Recognition and attachment (via opsonins: IgG, C3b) 2. Engulfment 3. Killing and degradation. |
| Front | Chemotaxis |
| Back | Movement of leukocytes toward chemical attractants: bacterial products, complement (C5a), leukotriene B4, IL-8. |
| Front | Inflammation key takeaway |
| Back | Inflammation is essential for survival, but excessive or prolonged inflammation contributes to many diseases (atherosclerosis, RA, cancer). |