PIWI-interacting RNAs (piRNAs) direct Piwi to repress transposons and maintain genome integrity in Drosophila ovarian somatic cells. piRNA maturation and association with Piwi occur at perinuclear Yb bodies. the centers of piRNA biogenesis. Here. https://www.spidertattooz.com/Nyrkki-terassormus-Teras-316L/