Table 1.

Clinical manifestations of normal fetus and NTD fetus

Sample ID	Clinical phenotype	Tissue	Gender	Gestational weeks	Retinoid content (ng/mg)	Vitamin A content (ng/mg)
1-1	Normal	Brain	Female	25	0.98	0.98
2-1	Normal	Brain	Male	18	3.36	0.90
3-1	Normal	Brain	Female	24	0.43	1.09
4-1	Normal	Brain	Female	18	2.33	0.84
5-1	Normal	Brain	Female	17	3.70	0.17
6-1	Normal	Brain	Male	20	3.60	0.89
7-1	Normal	Brain	Female	20	2.67	2.05
8-1	Normal	Brain	Male	20	2.11	1.18
9-1	Normal	Brain	Female	22	2.75	1.22
10-1	Normal	Brain	Female	18	2.68	1.05
1-2	Brain	Female	25	6.97	1.67
2-2	Anencephaly	Brain	Male	18	8.79	1.68
3-2	Anencephaly	Brain	Female	24	6.04	1.15
4-2	Anencephaly	Brain	Female	18	9.31	1.53
5-2	Anencephaly	Brain	Female	16	6.13	1.33
6-2	Anencephaly	Brain	Male	20	9.27	1.12
7-2	Anencephaly	Brain	Female	20	2.12	1.00
8-2	Anencephaly	Brain	Male	20	6.35	1.89
9-2	Anencephaly	Brain	Female	21	6.00	1.13
10-2	Anencephaly	Brain	Female	20	7.68	1.54