title: Immunologic responses in the gastrointestinal tract of the guinea pig. I. Characterization of Peyer's patch cells.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D006168:Guinea Pigs; D007413:Intestinal Mucosa / Q000276:immunology*; D007421:Intestine, Small / Q000276:immunology*; D008221:Lymphoid Tissue / Q000276:immunology*; D010581:Peyer's Patches; D013601:T-Lymphocytes