Injection of either Hoxa9a mRNA or Hoxd3a mRNA could rescue scl, gata1, and pu.1 gene expression in mll-MO1 morphants. A1, scl expression in control embryos without mll-MO1 injection; A2, scl expression in mll morphants; A3, scl expression in embryos injected with mll-MO1 (8 ng/per embryo) combined with Hoxa9a mRNA (100 pg/per embryo); A4, scl expression in embryos injected with mll-MO1 (8 ng/per embryo) combined with Hoxd3a mRNA (100 pg/per embryo); A5, gata1 expression in control embryos without mll-MO1 injection; A6, gata1 expression in mll morphants; A7, gata1 expression in embryos injected with mll-MO1 (8 ng/per embryo) combined with Hoxa9a mRNA(100 pg/per embryo); A8, gata1 expression in embryos injected with mll-MO1 (8 ng/per embryo) combined with Hoxd3a mRNA (100pg/per embryo); A9, pu.1 expression in control embryos without mll-MO1 injection; A10, pu.1 expression in mll morphants; A11, pu.1 expression in embryos injected with mll-MO1 (8 ng/per embryo) combined with Hoxa9a mRNA (100 pg/per embryo); A12, pu.1 expression in embryos injected with mll-MO1 (8 ng/per embryo) combined with Hoxd3a mRNA (100 pg/per embryo).