Cecchini, K., Zamani, M., Ajaykumar, N., Vega-Badillo, J., Bagci, A., Bailey, S., Zamore, P. D., Gainetdinov, I. (2026). Cleavage of mRNAs by a minority of pachytene piRNAs improves sperm fitness. Nature. https://doi.org/10.1038/s41586-026-10102-9