Aves serous membrane mixed endoderm/mesoderm-derived structure pleura http://upload.wikimedia.org/wikipedia/commons/a/ab/Gray965.png UMLS:C0032225 MESH:D010994 pleural tissue EV:0100044 In MA, is_a cavity lining (which we equate to parietal). In FMA, is_a (viscous) serous membrane (which includes mesothelium plus connective tissue). Note the MA structure should probably be associated with the mesothelium of pleura in FMA. JB/EHDAA2 argues the term 'pleura' is best used for the mesothelial lining (thus excluding connective tissue). See https://github.com/obophenotype/uberon/issues/86 pleural BTO:0001791 The invaginated serous membrane that surrounds the lungs (the visceral portion) and lines the walls of the pleural cavity (parietal portion). EMAPA:16775 uberon wall of pleural sac MA:0000433 pleura VHOG:0000394 The serous membrane that covers the lungs and lines the pleural cavity. [Kaufman_MH_and_Bard_JBL, The_anatomical_basis_of_mouse_development_(1999)_San_Diego:_Academic_Press, p.264][VHOG] FMA:9583 GAID:360 EFO:0001980 NCIT:C12469 CALOHA:TS-2081 UBERON:0000977 OpenCyc:Mx4rv3zwLZwpEbGdrcN5Y29ycA