Single-cell transcriptomics of regulatory T Cells reveals trajectories of tissue adaptation by Miragaia, RJ, Gomes, T, Chomka, A, Jardine, L, Riedel, A, Hegazy, AN, Whibley, N, Tucci, A, Chen, X, Lindeman, I, Emerton, G, Krausgruber, T, Shields, J, Haniffa, M, Powrie, F, Teichmann, SA