Five upper panels: Northern blots showing the levels of RT3-piRNA, Bmmar6-piRNA, R2Bm-piRNA, and R1Bm-piRNA in normal (Control), Vret-L/S-depleted (Vret KD), Vret-L-depleted (Vret-L KD), and Vret-S-depleted (Vret-S KD) cells. Bantam (miRNA) was detected as a loading control. Two lower panels: western blots showing the efficiency of the Vret knockdown. β-Tub was detected as a loading control. 