Columbia subject headings:
Fetal tissues--Research--Congresses.
Fetal tissues--Research.
Fetal tissues--Transplantation.
Fetus--Research--Congresses.
Fetus--Research.
Harvard subject headings:
Fetal tissues--Research--Congresses.
Fetal tissues--Research.
Fetal tissues--Transplantation
Fetus--Research
Fetus--Research--Congresses.
Princeton subject headings:
Fetal tissues--Research--Congresses.
Fetal tissues--Transplantation.
Fetus--Research--Congresses.