Table 1.
Group I (CRL 1.5~4.3 cm, 26~38 days: 1~25% gestation), Group II (CRL 4.4~8 cm, 39~52 days: 25~35% gestation), Group III (CRL 9~17.5 cm, 53~75 days: 35-50% gestation), Group IV (CRL 18~32 cm, 76~112 days: 50~75% gestation), Group V (CRL 33~47 cm, 113~150 days: 75~100% gestation). SYP: synaptophysin, NNE: non-neuronal enolase, GFAP: glial fibrillary acidic protein, VIM: vimentin, NPY: neuropeptide Y, VIP: vasoactive intestinal peptide.