Prototype KG‑aware adaptation of the BioPortal interface. Graph pages generated from live KG‑Registry metadata; tool links go to the live BioPortal.
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KTAO

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Kidney Tissue Atlas Ontology

KGXBioPortal ontologyvVision Release: 1.0.121
Visibility: Public

A KGX transformation of the BioPortal ontology Kidney Tissue Atlas Ontology (KTAO), produced by KG‑Bioportal. Nodes are ontology classes; edges are the relations between them.

Graph at a glance

22,172
Nodes
60,799
Edges
Vision Release: 1.0.121
Version
2026-09-14
Transformed

Products & downloads

KGX
KGX nodes & edges
KTAO.tar.gz
22K nodes · 61K edges
Base graph is the full graph

This ontology declares no imports, so its base graph already is its full graph; nothing separate was built.

The graph contains KTAO_nodes.tsv and KTAO_edges.tsv. Releases are incremental, so each link points at whichever release most recently rebuilt this ontology.

Biolink categories 25 categories across 22,172 nodes

Disease9,220
NamedThing4,496
PhysicalEntity2,268
InformationContentEntity1,080
BiologicalProcessOrActivity1,064
PhenotypicFeature946
AnatomicalEntity916
Gene382
Protein320
Cell319
Attribute293
Activity235
MolecularEntity209
CellularComponent130
Procedure89
Publication79
ChemicalEntity34
MacromolecularComplex33
EnvironmentalFeature21
LifeStage19
NucleicAcidEntity11
MaterialSample7
CellLine3
Food2
Polypeptide1

An item carrying more than one category is counted under each, so these counts can add up to more than the total.

How they were assigned 17,676 of 22,172 nodes (79.7%)

33is a seed term whose Biolink class is not in doubt
10,567inherits from a seed term above it in the hierarchy
7,076takes the category of a term it is mapped to by exact match

Biolink categories 1 category across 60,799 edges

Association60,799

An item carrying more than one category is counted under each, so these counts can add up to more than the total.