human_reference_atlas has part mast cell macrophage B cell Homo sapiens tissue mucosa-associated lymphoid tissue epithelio-lymphoid tissue uberon Wikipedia:Mucosa-associated_lymphoid_tissue MA:0000140 mucosa associated lymphoid tissue UMLS:C0599921 MALT mucosal-associated lymphoid tissue dermal skin-associated lymphoid tissue mucosa-associated lymphoid tissue Diffuse system of small concentrations of lymphoid tissue found in various sites of the body such as the gastrointestinal tract, thyroid, breast, lung, salivary glands, eye, and skin[WP]. Mucosal-associated lymphoid tissue is typically found as nodules associated with mucosal epithelia with distinct internal structures including B- and T-zones for the activation of lymphocytes[GO]. todo - add part relationships to specific layers subcutaneous skin-associated lymphoid tissue UBERON:0001961 FMA:62819 NCIT:C12910 mucosal-associated lymphatic tissue AS mucosa associated lymphatic tissue subcutaneous skin-associated lymphoid tissue dermal skin-associated lymphoid tissue dermis subcutaneous adipose tissue