Surface abundance of ³He (in mass fraction) at the end of first and second dredge-up episodes (solid and dashed black lines respectively) as a function of initial stellar mass and for the four metallicities considered (for the 3 to 6 M_⊙ standard models at Z = 0.0001 that do not undergo first dredge-up, we show instead the ³He surface abundance at the main-sequence turnoff). Red dotted curves indicate the initial ³He abundance and total D + ³He assumed at stellar birth. (Left) Standard models. Full red triangles correspond to the predictions by Weiss et al. (1996) at the end of 1DUP for Z_⊙; blue circles (open and full at the end of 1DUP and 2DUP respectively) are predictions by Sackmann & Boothroyd (1999) for Z_⊙ and Z = 10^-4. (Right) Models including thermohaline and rotation-induced mixings.