nipple http://upload.wikimedia.org/wikipedia/commons/5/59/Female_nipple_profile.jpg NCIT:C12299 galen:Nipple Projection of skin containing the outlets for 15-20 lactiferous ducts arranged cylindrically around the tip. UBERON:0002030 EMAPA:36508 papillary part of breast thelium uberon a male mouse has no nipples - mammary tissue regresses during embryonic development https://github.com/obophenotype/uberon/issues/1873 BTO:0000821 Nipple being part_of mammary gland is due to a practical modelling in uberon that treats mammary gland as including adnexa. A GCI asserts that nipple is part of the breast in humans. For discussion of this, please refer to https://github.com/obophenotype/uberon/issues/1873. papilla of breast MA:0000796 FMA makes this part of the breast, whereas in MA it is part of the mammary gland - CALOHA:TS-2234 SCTID:265780004 GAID:35 FMA:67771 papilla mammae papilla mammaria MESH:D009558 thele Wikipedia:Nipple UMLS:C0028109 teat multicellular anatomical structure