# NanoParticle Ontology (NPO)

> An ontology that represents the basic knowledge of physical, chemical and functional...

- Page: https://library.schematica.io/model/2896581d606b481f9d50421e14558afc
- Model type: Ontology
- License: CC BY 4.0
- Access type: Free
- Access method: Download
- Model size: Mid
- Formats: OWL
- Domains: Healthcare
- Audiences: Researcher
- External link: https://bioportal.bioontology.org/ontologies/NPO
- Contact: Nathan Baker (nathan.baker@pnl.gov)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | NPO |
| Description | An ontology that represents the basic knowledge of physical, chemical and functional characteristics of nanotechnology as used in cancer diagnosis and therapy. |
| Format | OWL |
| Categories | Chemical |
| Groups | Cancer Biomedical Informatics Grid |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 1,904 |
| Individuals | 0 |
| Properties | 81 |
| Max Depth | 17 |
| Max Child Count | 112 |
| Average Child Count | 3 |
| Classes With One Child | 245 |
| Classes With More Than 25 Children | 7 |
| Classes With No Definition | 2 |

## Projects using NPO

- [eNanoMapper](https://bioportal.bioontology.org/projects/eNanoMapper)
- [caB2B](https://bioportal.bioontology.org/projects/caB2B)
- [nano-TAB](https://bioportal.bioontology.org/projects/nano-TAB)

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Source: https://library.schematica.io/model/2896581d606b481f9d50421e14558afc