Cryo-EM reveals mechanisms of natural RNA multivalency. - Wang, Liu; Xie, Jiahao; Gong, Tao; Wu, Hao; Tu, Yifan; Peng, Xin; Shang, Sitong; Jia, Xinyu; Ma, Haiyun; Zou, Jian; Xu, Sheng; Zheng, Xin; et al. (Science, 2025)