Cell Atlas

Every cell is one point. Drag to pan, scroll to zoom, shift-drag to select a region; click any group in the legend to isolate it. Use Colour cells by to switch between cell type, cluster, library, quality-control metric and the expression of a single gene.

UMAP — this re-analysis

Drawn from the same exported coordinates and labels the interactive atlas above uses, so the figure and the atlas cannot disagree. 25,438 cells.

Coloured by Leiden cluster (42)
UMAP of the re-analysed HVULG_siebert_atlas, coloured by Leiden cluster, each labelled with its number

Each cluster's number is placed at its own centroid, so the grouping can be read without relying on colour. These are Leiden clusters, not named cell types.

Cell types in this dataset

Click a cell type to isolate it in the atlas above. The bar beside each percentage is drawn to scale: a cell type at 2.6 % fills 2.6 % of the track, so the rows can be ranked by eye without reading the numbers.

Quality control for this dataset

These are the figures actually applied to the cells shown above, not the values requested in a configuration file. Every dataset is filtered independently; see Single-cell Data for the full table across all datasets.

Source BioProject PRJNA497876
SRA study SRP166331
GEO series GSE121617
Library type Drop-seq (curated confidence)
Libraries integrated 15
Cells reported by source 24985
Cells before filtering 26,265
Cells after cell filtering 25,549
Doublets removed 111 (0.43%)
Cells after filtering 25,438
Retained 96.8%
Filtering strategy Per-library MAD outlier detection (adaptive)
Thresholds applied adaptive: per-library MAD (5.0 MADs) on UMI, genes and MT%, floor 200 genes, floor 500 UMI
Mitochondrial genes found 0 — too few for a reliable MT% filter, so none was applied
Doublet method Scrublet (per library)
Integration method Harmony on sample (15 libraries)
Cell-type annotation Not assigned - Leiden clusters only
Cell-type labels from none - Leiden clusters; no cluster reached 2 marker-panel hits; labels are Leiden cluster identities, not cell types (6 of 2100 ranked features match any of the 12 panel patterns, 1392 are composite 'id|homology-transfer' names; the features are keyed by
Pipeline version cnidosite-sc-1.0.0
Processed 2026-09-23T00:56:16+00:00
Clusters / cell types 42 clusters (no cell types asserted)
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