Increased lymphoid epigenetic priming in gata2b^kozebrafish by scATAC-seq. (A) Differential TF motif score analysis between WT and gata2b^ko (KO) zebrafish within HPC population. (B) Feature plots of WT and gata2b^ko samples for SPI1 motif score within individual cells in the HPC population. (C) Violin plot of SPI1 TF motif score in WT and gata2b^ko HPCs. *P = 1.68 × 10⁻⁵, 2-tailed Student t test. (D) Differential TF motif score analysis between WT and gata2b^ko samples within B lineage (LP, LymphProg, B-cell progenitor and precursors, and mature B cells). (E) Feature plots of WT and gata2b^ko samples for IRF4 motif score within individual cells in lymphoid lineage. (F) Violin plot of IRF4 TF motif score in WT and gata2b^ko B-cell precursors. *P = 8.37 × 10⁻⁶, 2-tailed Student t test.