SMCR8 and neuroblastoma: Fig. S4H shows SMCR8 protein in large cytoplasmic aggregates of NaAsO2-stressed HEK 293T cells that costain with a different endogenous SG marker, the LINE-1 retrotransposon-encoded ORF1 protein [81], while Fig. S4I shows costaining with SG-marker eIF3η in human neuroblastoma SK-N-SH cells.