CxGDisc Get Collection

Get detailed information about a specific CellxGene Discovery collection, including all datasets with tissue, disease, organism, cell type, and assay details. Example: collection '48259aa8-f168-4bf5-b797-af8e88da6637' is the Human Breast Cell Atlas with 5 datasets (stroma, epithelial, integrated) totaling 2.8M cells. Each dataset includes cell count, tissue labels, disease status, and available assay types.