Bone marrow breakout lesions act as key sites for tumor-immune cell diversification in multiple myeloma. - Lutz R; Poos AM; Solé-Boldo L; John L; Wagner J; Prokoph N; Baertsch MA; Vonficht D; Palit S; Brobeil A; Mechtersheimer G; Hildenbrand N; et al. (Science immunology, 2025)