part_of part of part of has quality adjacent to produced by transparent cornea substantia propria of cornea corneal endothelium Descemet's membrane https://github.com/obophenotype/uberon/issues/15 The strong, resistant, thin, noncellular fourth layer of the cornea, located between the endothelium (from which it is secreted) and the stroma. (Cline et al., Dictionary of Visual Science, 4th ed) basement membrane of epithelium neural crest-derived structure