Env-antibody coevolution identifies B cell priming as the principal bottleneck to HIV V2 apex broadly neutralizing antibody development. - Habib R; Roark RS; Li H; Connell AJ; Hogarty MP; Wagh K; Wang S; Marchitto L; Skelly AN; Carey JW; Sowers KJ; Ayyanathan K; et al. (Science immunology, 2026)