The immune landscape of peripheral blood cells from subjects with extreme longevity at single cell resolution.A. UMAP embeddings of PBMCs from all 66 subjects representative of the human lifespan from the integrated scRNA-seq datasets (NECS, PNAS, and NATGEN, labelled by the identified immune cell subtypes. B. UMAP embeddings of PBMCs from all 66 subjects representative of the human lifespan from the integrated scRNA-seq datasets (NECS, PNAS, and NATGEN, labelled by the four age groups.