RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
A histoplasmosis that results in systemic fungal infection, has_material_basis_in Histoplasma capsulatum var duboisii, transmitted by airborne spores and results in formation of nodules, results in formation of ulcers and results in formation of osteolytic bone lesions. (DO)