Fig. 7. Rescue of had cardiac phenotypes. At 24 hpf, the heart is a
tubular structure in the wild-type embryos (A), but remains as a shallow cone
in had mutant embryos (B). (C) Injecting
1B1 mRNA
into had mutant embryos results in the development of a normal
tubular heart. (D) Hearts of had embryos injected with
2 mRNA remain as a shallow cone.