Related by context. Frequent words. (Click for all words.) 58 Therapeutic cloning 57 fertilized embryo 55 Embryology Act 54 human reproductive cloning 54 gamete 54 gametes 53 reproductive cloning 53 Artificial insemination 53 intracytoplasmic sperm injection 53 embryo 53 cloned embryo 52 Sertoli cells 52 diagnosis PGD 51 cloning embryos 51 Nayernia 51 transfer SCNT 51 preimplantation genetic diagnosis 50 Embryology Authority 50 iPSC 50 Embryology Authority HFEA 50 pre implantation genetic 50 andrology 49 ethically acceptable 49 embryos 49 pluripotent stem cell 49 umbilical cord stem cells 49 genetic manipulations 49 gonadal 49 transgenic animals 49 Foetal 48 IVF embryos 48 human antithrombin 48 Genetic modification 48 oocyte 48 Evolutionary biologists 48 pluripotent cells 48 surrogate motherhood 48 placental tissue 48 optogenetics 48 embryology 48 cloning 48 neural progenitor cells 48 reproductive hormones 48 multipotent 48 macroevolution 47 endometrial tissue 47 fetal tissue 47 intrauterine 47 pancreatic tissue 47 SCNT 47 unfertilized egg 47 therapeutic cloning 47 spermatogenesis 47 fetu 47 Synthetic biology 47 cloned embryos 47 chimeras 47 hematopoietic cells 47 sperm 47 induced pluripotent stem cell 47 reproduction 47 induced pluripotent stem iPS 47 polyandry 47 gut microbiota 47 female hormone estrogen 47 Embryo 47 asexually 47 reproduce asexually 46 fertilized embryos 46 vertebrate animals 46 preventing ovulation 46 germ cells 46 fertilize eggs 46 Human Fertilization 46 vitro fertilization clinics 46 embryonic stem ES 46 neural cells 46 mammalian brain 46 kisspeptin 46 female reproductive organs 46 unfertilized eggs 46 ruminant animals 46 transgenics 46 genetic manipulation 46 teratomas 46 thyroid hormones 46 nonhuman primate 46 transgenic animal 46 microcephalic 46 fertility 46 human cloning 46 HFEA 46 mutant genes 46 heterosis 46 fetal stem cells 46 Embryos 46 congenital disorders 46 morphogenesis 46 sex hormone estrogen 46 hepatocyte 46 assisted reproduction