Fig. 1.
Repeated administration of CpG-ODN induces lymphoadenopathy and splenomegaly.
C57BL/6 mice underwent 9 daily injections of CpG-ODN or Neg-ODN (lacking CpG motifs). One day after the last ODN injection the draining axillary lymph nodes (A) and spleens (B) were harvested and photographed.