Related by context. Frequent words. (Click for all words.) 61 embryo 61 frozen embryos 59 embryos 53 IVF 53 vitro fertilization IVF 50 fertilized eggs 50 vitro fertilization 48 artificial insemination 48 human embryos 47 fertilized egg 46 fertility clinic 45 stem cells 45 umbilical cord blood 44 sperm 44 embryonic cells 44 stem cell 43 ovary 43 therapeutic cloning 42 cord blood 42 fertility clinics 42 triplets 42 fertility treatments 42 adult stem cells 42 PGD 41 embryonic stem cells 41 surrogate mother 40 surrogacy 40 sperm donor 40 stem cell therapy 40 uterus 40 infertile 40 stem cell transplant 39 baby 39 cesarean section 39 births 39 quadruplets 39 unborn 39 miscarried 39 caesarean section 39 stillborn 39 wombs 38 born prematurely 38 babies 38 cloning 38 implantation 37 Embryonic stem cells 37 conception 37 Fertility 37 Stem cells 37 ovaries 37 bone marrow transplants 37 embryonic stem cell 37 transplantation 37 twins 37 bone marrow transplant 37 gene therapy 37 cloned 37 grandchild 37 premature babies 37 pregnancies 37 amniotic fluid 37 womb 37 fertility 37 birthing 37 fetus 36 organ transplant 36 newborn 36 placenta 36 implanted 36 conjoined twins 36 Caesarean section 36 bone marrow 36 newborn baby 36 iPS cells 36 HFEA 36 transplant 36 birth 36 human cloning 36 unborn baby 36 vitro 35 transfusion 35 caesarean 35 Stem cell 35 eggs 35 adoptive 35 lung transplant 35 infanticide 35 firstborn 35 thawed 35 piglets 35 fetuses 35 adoptive parents 35 surrogate 35 sextuplets 35 ovarian 35 offspring 34 hysterectomy 34 human embryonic stem 34 pups 34 infertility 34 liver transplant