Defining inflammatory cell states in rheumatoid arthritis joint synovial tissues by integrating single-cell transcriptomics and mass cytometry - Zhang, F; Wei, K; Slowikowski, K; Fonseka, CY; Rao, DA; Kelly, S; Goodman, SM; Tabechian, D; Hughes, LB; Salomon-Escoto, K; Watts, GFM; Jonsson, AH; et al. (Nature Immunology, 2019)