---
license: cc-by-4.0
tags:
  - single-cell
  - scRNA-seq
  - genomics
---

# CellxGene 45M Collection

A curated subset of [CellxGene](https://cellxgene.cziscience.com/) (~45M cells) used to align the **Stack model** after pretraining on full human scBaseCount.

## Selection Criteria

- ≥ 50,000 cells per dataset
- ≥ 5 donors per dataset

## Cell Type Annotations

Author-annotated coarse-grained cell type labels were heuristically identified and transferred to adata.obs["author_cell_type"].