Confocal analysis of splenic GCs. Spleens from untreated (a), treated (8 mg/kg LTβR-Ig) (b), and recovery animals (8 mg/kg treatment followed by 3-month recovery) (c) were stained with anti-IgD (green), anti-CD35 (red), and Ki-67 (blue). Spleens were photographed under oil immersion at ×400 on a scanning confocal microscope. Ki-67/CD35 double positive cells appear as magenta colored in (a).