| Type | MGI:General | Description | elongated spermatids are rarely found in the seminiferous tubules, and multinucleated cysts containing degenerated round spermatids are observed at ~P24 (around the onset of spermiogenesis) cluster-derived pachytene PIWI-interacting RNA (piRNAs) are reduced while transposon-derived (intron-, SINE-, LINE-, and LTR-derived) piRNAs are increased in the testes both MILI-bound and MIWI-bound pachytene cluster-derived piRNAs are reduced LINE-1 expression is not detected in testes, indicating that arrested spermiogenesis is not due to LINE-1 derepression |
