00.\ **Abbreviations:** Ctrl, control; hpf, hours postfertilization; ISV, intersegmental vessel; MO, morpholino; PEG-*b*-PCL, poly(ethylene glycol)-*b*-poly(*ε*-caprolactone); qPCR, quantitative polymerase chain reaction; SEM, standard error of mean.](ijn-00-0000Fig0){#f0-ijn-00-0000}