degradome-seq w[1118]; piwi[2]/piwi[Nt]
degradome-seq protocol described in  Han, B. W., Wang, W., Li, C., Weng, Z., and Zamore, P. D. (2015). piRNA-­Guided Transposon Cleavage Initiates Zucchini-­Dependent, Phased piRNA Production. Science