> For the complete documentation index, see [llms.txt](https://doc.duaer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/getting-started/cell-ontology.md).

# Search Cell Ontology in Duaer

In Duaer, search cell types via Cell Ontology. One successful search uses 1 credit.
## What you get

Cell Ontology in the Duaer data market uses 1 credit per successful search.

Add the node from the [Duaer Data category](/getting-started/duaer-data.md) (Cell Ontology), or copy the skill on the [data market](/getting-started/data-market.md). Related: [Cell lines](/getting-started/cell-lines.md).

## Search on the canvas

1. Open the node creator, select Duaer Data, then Cell Ontology.
2. Enter Words (a new node starts with neuron), or an id.
3. Limit defaults to 10, max 20. Select Execute step.

A successful search uses 1 credit. Production deliverables land in the [data pool](/getting-started/data-pool.md).

## Call the API

- GET https://api.duaer.com/v1/data/cell-ontology?...
- Authorization: Bearer <Duaer key>
- words or id is required.

For keys, refer to [Authentication for the Duaer public API](/api/authentication.md). Below is the same English call skill as Copy skill.

## Call skill

Same text as Copy skill on the Duaer data market. Keep it English.

```
---
name: duaer-cell-ontology
description: >-
  Search cell types via Cell Ontology through Duaer.
  One successful search uses 1 Duaer credit.
---

# Duaer Cell Ontology

Search cell types via Cell Ontology through Duaer with a Duaer key.

## Call

`GET https://api.duaer.com/v1/data/cell-ontology?words=neuron&limit=10`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Provide `words` or `id`.
- `words` — cell type words, such as neuron.
- `id` — optional. Cell Ontology id such as CL:0000540.
- `limit` — optional. From 1 to 20. Default 10.

## Result

Each item has `source`, `title`, `url`, `summary`, `clId`, `description`, `synonyms`, and `iri`.


```
## Questions

### How many credits does a Cell Ontology search use in Duaer?

One successful Cell Ontology search in Duaer uses 1 credit.