GALT can be also divided into two categories considering the structure, from which the function arise. There can be found 1.) organised GALT made up from folicules – such as Peyer´s patches, mesenteric lymph nodes and even more organised appendix. Its main function is to induce immune reaction. 2.) diffuse GALT with single T and B cells, macrophages, eosinophiles, basophiles and mast cells, preferentially found in lamina propria. This part of GALT is made up from mature effector cells ready to perform their actions.