Similar to week 10 teratomas (Supplementary Fig. 2D), we observed ubiquitous expression of ADAR across all stages of teratoma development, while ADARB2 exhibited neural-specific expression, and ADARB1 showed strongest expression in neural tissues but also was expressed at low levels elsewhere (Supplementary Fig. 6A-C). Here, ADARB2 is linked to teratoma.