Valence and avidity determine the agonistic activity of anti-TNFR2 nanobody fusion proteins. - Anany, Mohamed A.; Siegmund, Daniela; Zaitseva, Olena; Lang, Isabell; Mouhandes, Bayan; Salah, Mervat; Weisenberger, Daniela; Stepanzow, Svetlana; Vargas, Juan Gamboa; Dahlhoff, Julia; Schneider, Theresa; Tanghe, Giel; et al. (Cell Chemical Biology, 2025)