Engineered mucus-tethering bispecific nanobodies enhance mucosal immunity against respiratory pathogens. - Zhao L; O'Donnell KL; Dubey M; Wang Y; Martinez NR; Zhang Y; Steininger HM; Ma C; Mallajosyula V; Lee LLY; Lachmansingh RN; Stavitsky S; et al. (Nature nanotechnology, 2026)