RIP3 e2/i2-splice-blocking (5′-TTTTAGAAATCACCTTGGCATCCAG-3′) and PGAM5-translation-blocking morpholino (5′-AGCGCCCTCCGAAAAGACATGCTTC-3′) (Gene Tools) were diluted to 0.15 mM in injection solution (4 (link)). Approximately 2-4 nl was injected into the yolks of embryos at the one-to-two-cell stage.