Extended Data Table 2 | Transcriptomes for gene annotation
A summary of all the transcriptome data used for gene annotation. RNA isolated from dif-
ferent samples as indicated were used for Illumina sequencing to cover as many expressed
genes as possible. Opti-Prep, density-based separation of dissociated Xenia cells into four
different layers (Methods). lv1, lv2, lv3, and lv4 indicate layer 1, layer 2, layer 3 and layer 4 cells,
respectively (used to make the RNA-seq libraries). M*, million; G†, gigabase.