Uniquely mapped piRNAs are plotted over the 42AB, 20A, and flam piRNA clusters. The piRNA profiles of tub-Gal80ts-tj-Gal4;w-sh (control) and tub-Gal80ts-tj-Gal4;tj-sh adult ovaries are shown, normalized per million of unique genome-mapping piRNAs (0 mismatches).