Chem. Commun., 2026, Accepted Manuscript DOI: 10.1039/D6CC02268E, Communication Junyue Sun, Yan Qi, Jing Zhang, Wei Ren, Chenghui Liu A rapid one-step flow cytometry immunoassay is developed by counting the number of target protein-induced nanoaggregates. Without any separation or washing steps, it quantifies Tau protein rapidly with a lowest...