Frozen embryos: too cold to touch? Spare embryos: symbols of respect for humanity and freezing in the pronuclear stage.
Koninckx
P R
PR
Department of Obstetrics and Gynaecology, University Hospital Gasthuisberg, Belgium.
Schotsmans
P
P
D004622:Embryo, Mammalian; D005314:Embryonic and Fetal Development; D004992:Ethics, Medical; D005615:Freezing; D006801:Humans