MKI67 and hepatoblastoma: Our scRNA-seq analysis revealed Mki67 was highly expressed in clusters 3, 7, 12, and 16 from tumor samples, and cluster 3 (HB associated Erythroid) expressed the highest levels of Mki67 (Fig. 5c), in line with results from human hepatoblastoma that HB-associated erythroid cells were highly proliferative65.