Here, you can interactively analyze and visualize RNA-seq data for all excitatory cell populations in the brain at multiple levels of granularity. Analysis can be hypothesis driven by supplying predetermined lists of genes, or the dataset can be explored in a gene discovery-based fashion using enrichment and/or differential expression queries. To get started, select the population(s) of excitatory cells you are interested in analyzing, choose your desired level of analysis, and follow the prompts. Any figures or data generated during online analysis can easily be downloaded. Additionally, the full dataset of gene expression values can also be downloaded for offline analysis in other environments.