a, Schematic representation of Notch and (pre)TCR signalling interactions as reported in the literature. b, ddPCR analysis of Notch and (pre)TCR target genes at D24, 27, 31 and 35 of T cell differentiation (normalized to RPL13A) (n = 3 technical replicates). c, t-distributed Stochastic Neighbour embedding (tSNE) analysis of cell surface expression of CD4, CD8α, CD8β and pTα on D35 TRAC-1XX-TiPS iT cells. Colour scale represent level of marker expression. d, Distribution of pTα expression on D35 TRAC-1XX-TiPS (n = 3 biological replicates). All data are means ± s.d.