> ## Documentation Index
> Fetch the complete documentation index at: https://docs.biom.science/llms.txt
> Use this file to discover all available pages before exploring further.

# Scientific Databases

> Browse and mount datasets from DANDI, IDR, Allen Brain Atlas, and AWS Open Data.

# Scientific Databases

Relay includes connectors to four major public scientific data repositories. You can browse, search, and mount datasets directly into your viewer — no download required.

## DANDI Archive

[DANDI](https://dandiarchive.org/) is a public archive for neurophysiology and behavioral data.

* **Search** neurophysiology and behavioral datasets
* **Mount NWB files** via HTTP range streaming (no full download needed)
* **Mount OME-Zarr** and LINDI files
* **Pagination** — cursor-based, 25 results per page
* **Save to Relay Drive** — download datasets for offline access
* **Signed URLs** — 6-hour TTL for streaming access

## IDR (Image Data Resource)

[IDR](https://idr.openmicroscopy.org/) is a repository of reference microscopy datasets.

* **Browse** curated microscopy datasets
* **Mount OME-Zarr** from UK1S3 server
* **Metadata display** — SizeX/Y/Z/C/T, pixel type
* **Thumbnail previews** in search results
* **Conversion option** — convert to OME-TIFF if Zarr is unavailable

## Allen Brain Cell Atlas

The [Allen Brain Atlas](https://portal.brain-map.org/) provides reference brain datasets.

Curated datasets include:

| Dataset                            | Description                                 |
| ---------------------------------- | ------------------------------------------- |
| **ABC Atlas WMB (10Xv2)**          | Whole Mouse Brain, 10X Genomics v2          |
| **ABC Atlas WMB (10Xv3 Multiome)** | Whole Mouse Brain, 10X Genomics v3 Multiome |
| **MERFISH Whole Mouse Brain**      | Spatially resolved transcriptomics          |
| **Allen CCFv3 Reference Atlas**    | 3D volumetric atlas, 10um resolution        |
| **Allen Mouse Brain Connectivity** | Connectome data                             |
| **Projection Density**             | Projection density maps                     |

Datasets are accessed via direct S3 URLs and loaded as Zarr or Neuroglancer Precomputed tiles.

## AWS Open Data

Relay includes connectors to select AWS Open Data datasets:

### Open NeuroData

| Dataset           | Resolution | Description              |
| ----------------- | ---------- | ------------------------ |
| **Bock 2011**     | 4x4x45 nm  | TEM, mouse visual cortex |
| **Kasthuri 2015** | 3x3x30 nm  | EM connectome            |

### HuBMAP

| Dataset                   | Channels | Description              |
| ------------------------- | -------- | ------------------------ |
| **Human Kidney CODEX**    | 20       | Kidney tissue imaging    |
| **Human Intestine CODEX** | 16       | Intestine tissue imaging |

### Earth observation

| Dataset            | Description                                                        |
| ------------------ | ------------------------------------------------------------------ |
| **GOES-16**        | NOAA satellite imagery (NetCDF)                                    |
| **Sentinel-2 L2A** | Copernicus/ESA, 10m resolution, 13 bands (Cloud-Optimized GeoTIFF) |

## Mount by URL

You can mount any dataset by providing a direct URL:

* **Zarr** — any HTTP-accessible Zarr store
* **NWB** — any HTTP-accessible NWB file
* **Neuroglancer Precomputed** — any Neuroglancer-compatible tile source

Simply paste the URL into the database mount dialog and Relay will auto-detect the format.

## Drag and drop

You can drag dataset entries from the database browser directly onto a pane to load them instantly. This works across all four database connectors.