part of part of has part has part organ part renal column kidney kidney pyramid medullary region of kidney 2022-02-03T14:18:40Z http://orcid.org/0000-0002-2825-0621 UBERON:8410073 Note that 'medullary region of kidney' is not synonymous with 'renal medulla'. The former covers kidney pyramids and renal columns, which are histologically different, while the latter is composed of kidney pyramids only. A part of the kidney that comprises kidney pyramids and renal columns. kidney medullary region https://github.com/obophenotype/uberon/issues/2126