# Human Developmental Anatomy Ontology, abstract version 2 (EHDAA2)

> A structured controlled vocabulary of stage-specific anatomical structures of the human. It has...

- Page: https://library.schematica.io/model/af83e3ea50914317a782a2ce9b418bb4
- Model type: Ontology
- License: CC BY 4.0
- Access type: Free
- Access method: Download
- Model size: Mid
- Formats: OBO
- External link: https://bioportal.bioontology.org/ontologies/EHDAA2
- Contact: EMAP Administrators (J.Bard@ed.ac.uk)
- Listed in library: 2025-06-12
- Last updated: 2024-01-12

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | EHDAA2 |
| Description | A structured controlled vocabulary of stage-specific anatomical structures of the human. It has been designed to mesh with the mouse anatomy and incorporates each Carnegie stage of development (CS1-20). The abstract version of the human developmental anatomy ontology compresses all the tissues present over Carnegie stages 1-20 into a single hierarchy. The heart, for example, is present from Carnegie Stage 9 onwards and is thus represented by 12 EHDA IDs (one for each stage). In the abstract mouse, it has a single ID so that the abstract term given as just heart really means heart (CS 9-20). Timing details will be added to the abstract version of the ontology in a future release. |
| Format | OBO |
| Categories | Anatomy, Gross Anatomy, Animal Gross Anatomy, Human Developmental Anatomy |
| Groups | OBO Foundry |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 2,743 |
| Individuals | 0 |
| Properties | 10 |
| Max Depth | 11 |
| Max Child Count | 361 |
| Average Child Count | 19 |
| Classes With One Child | 30 |
| Classes With More Than 25 Children | 33 |
| Classes With No Definition | 2,509 |

## Projects using EHDAA2

- [The Monarch Initiative](https://bioportal.bioontology.org/projects/Monarch)
- [Bgee](https://bioportal.bioontology.org/projects/Bgee)

---

Source: https://library.schematica.io/model/af83e3ea50914317a782a2ce9b418bb4