runx1 expression is specifically reduced following nipblb down‐regulation. A‐C WISH analyses of runx1 expression at the stage of 30 hpf in embryos injected with control morpholino (ctrl‐MO) (A), nipblb‐MO (B) and nipblb‐MO with runx1‐mRNA (C). The runx1 expression in the caudal region (higher magnification in the box) is reduced following nipblb down‐regulation and rescued in embryos co‐injected with nipblb‐MO and runx1 mRNA. E‐F, RT‐qPCR analyses of the P1runx1 (D) and P2runx1 (E) isoforms in ctrl‐MO‐, nipblb‐MO‐ and nipblb‐MO/runx1mRNA‐injected embryos at 48 hpf. Scale bars indicate 100 μm. One‐way ANOVA with Bonferroni correction, **P < .01, *P < .05, n.s: non‐significant
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