Related by context. Frequent words. (Click for all words.) 77 embryos 70 embryo 70 fertilized eggs 69 human embryos 66 frozen embryos 59 fertilized egg 58 vitro fertilization 58 embryonic cells 57 embryonic stem cells 57 fertility clinics 56 stem cells 56 therapeutic cloning 54 stem cell 53 IVF 53 fertility treatments 53 embryonic stem cell 52 human cloning 52 adult stem cells 52 human embryonic stem 52 vitro fertilization IVF 50 sperm 50 infertile couples 50 artificial insemination 50 fertilized 49 fetuses 48 cloning 47 fertility 47 ovaries 47 stem cell research 47 fetus 46 ovary 46 HFEA 46 iPS cells 45 PGD 45 umbilical cord blood 45 eggs 45 surrogate mothers 44 follicles 44 surrogacy 44 fertility clinic 44 Embryonic stem cells 43 Human Fertilisation 43 adult stem cell 43 Stem cells 43 Stem cell 43 aborted fetuses 43 abortions 43 unborn 43 unborn babies 43 embryonic 43 Fertility 42 fertilization 42 uterus 42 insulin producing 41 Abortions 41 infertile 41 infertility 41 Cloning 41 wombs 41 cloned 41 vitro 41 Bioethics 41 Stem Cell 41 unborn child 40 tissue 40 personhood 40 Stem Cell Research 40 organ transplants 40 genetic defects 39 abortion 39 procreation 39 livers 39 pregnancies 39 harvested 39 Sperm 39 piglets 39 womb 39 cord blood 39 egg 39 reproductive 39 tissue samples 38 stem cell therapies 38 amniotic fluid 38 semen 38 procreate 38 Infertility 38 bioethics 38 cloned animals 38 sonogram 38 lesbian couples 38 Reproductive 37 genetically altered 37 surrogate mother 37 ultrasounds 37 spinal cords 37 heterosexual couples 37 sex marriages 37 progenitor cells 37 fetal 37 tissues 37 beets