Each <study>_<species>_data.rds file contains a Seurat object with single-cell gene expression (raw counts) and the corresponding metadata. 

All datasets use adult samples from different brain regions in each species.

Genes in all datasets are human gene symbols (for non-human species, gene names were converted to one-to-one human orthologs using Ensemble v111 or v113).


Columns in metadata :
study_id : First author of study
cell_type : cell type annotation from study or CellxGene 
class : broad annotation (if exists) from study
cluster : cluster annotation (if exists) from study
region : brain region sampled in study (abbreviated)
region_name : brain region sampled in study
species
level1_anno : Neuron, Non-neuron
level2_anno : Oligo, ExN, CGE InN, MGE InN etc.