part of part_of part of part_of epithelium of bronchus bronchus endoderm-derived structure basement membrane of epithelium bronchus basement membrane A basement membrane that is part of a bronchus. EMAPA:37809 MA classifies as type of connective tissue: https://github.com/obophenotype/mouse-anatomy-ontology/issues/108 MA:0001832 NCIT:C49208 UBERON:0009652 UMLS:C1707051 bronchial basement membrane uberon respiratory system basement membrane