annotations_creators:found multilinguality:monolingual source_datasets:original language:en license:cc-by-4.0 size_categories:100K<n<1M format:parquet modality:tabular modality:text library:datasets library:dask library:mlcroissant library:polars region:us single-cell single-nucleus snRNA-seq scRNA-seq mouse skeletal-muscle aging longevity cell-atlas anndata gene-expression pca umap dimensionality-reduction highly-variable-genes