# Page Not Found

The URL `data-packages/ontology` does not exist.

You might be looking for one of these pages:
- [External Ontologies](https://docs.biobox.io/guide/data-packages/external-ontologies.md)
- [Data Packages](https://docs.biobox.io/guide/data-packages/data-packages.md)
- [Gene Ontology](https://docs.biobox.io/guide/data-packages/external-ontologies/gene-ontology.md)
- [Cell Ontology](https://docs.biobox.io/guide/data-packages/external-ontologies/cell-ontology.md)
- [Tissue](https://docs.biobox.io/guide/data-packages/external-ontologies/tissue.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.biobox.io/guide/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.biobox.io/guide/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/guide/data-packages/external-ontologies.md`)
- Use `Accept: text/markdown` header for content negotiation