PMEL and melanoma: We thank the VIB Nanobody Core (Reza Hassanzadeh Ghassabeh) for sdAb selection; the VIB Flow Core (Gert Van Isterdael and Julie Van Duyse) for assistance with optimization of the cell sorting; the VIB Nucleomics Core (Stefaan Derveaux and Ruth Maes) for their help in organizing the TCR repertoire analysis, performing the bulk TCR sequencing and the data processing; Bart Lambrecht for the OT-I TCR transgenic CD45.1 C57BL/6 Rag2−/− C57BL/5 mice; Karine Breckpot for the full-body Batf3-/- C57BL/6 mice and Nicholas P. Restifo for the B16 gp100+ melanoma cell line.