obsolete_Peyer's patch true James Malone BTO:0001784 NCIt:C22562 true Any of numerous large oval patches of closely aggregated nodules of lymphoid tissue in the walls of the small intestine esp. in the ileum that partially or entirely disappear in advanced life and in typhoid fever become the seat of ulcers which may perforate the intestines. Any of numerous large oval patches of closely aggregated nodules of lymphoid tissue in the walls of the small intestine especially in the ileum that partially or entirely disappear in advanced life and in typhoid fever become the seat of ulcers which may perforate the intestines. Peyers Patch (MMHCC) Use: http://purl.obolibrary.org/obo/UBERON_0001211 label : Peyer's patch http://purl.obolibrary.org/obo/UBERON_0001211 Peyer's gland 2.38