ed embryos. Data are expressed as mean ± SEM from three biological samples. \**P*\<0.00, \*\**P*\<0.00.\ **Abbreviations:** Ctrl, control; hpf, hours postfertilization; ISV, intersegmental vessel; 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}  ![PEG-*b*-PCL nano-micelle in