CHD	congenital heart disease.
DHFR	dihydrofolate reductase.
FA	folic acid.
FDR	False-discovery rate.
hpf	hours postfertilization.
ISV	intersegmental vessel.
IVF	in vitro fertilization.
MTHF-Ca	6S-5-methyltetrahydrofolate-calcium.
MO	morpholino.
NTD	neural tube defects.
PCV	posterior cardinal vein.
SIV	subintestinal vein.
SV-BA	sinus venosus and bulbus arteriosus.