IgG-producing cells are scarce in healthy colonic tissue (control) and they are not more numerous on day 8 of the 2.5% or 5% DSS-induced colitis. Payer's patch contains few IgG positive cells located in the outer layer (lower right). Original magnification × 20.
Stevceva et al. BMC Clinical Pathology 2001 1:3 doi:10.1186/1472-6890-1-3