Related by context. Frequent words. (Click for all words.) 53 IVF embryos 52 stem cells harvested 52 artificially inseminate 51 inseminated 51 artificially inseminated 50 cloned embryo 50 embryos 50 IVF treatment 50 inseminate 49 fertilized eggs 49 ovulated 49 gamete 49 embryo 49 unfertilized human 49 umbilical cord stem cells 49 fertilized 49 fertilized embryos 48 leftover embryos 48 Infertile 48 preimplantation genetic diagnosis 47 embryo implantation 47 infertile 47 undergoing IVF 47 cryopreserved 47 fertilized egg 46 unfertilized eggs 46 unfertilized egg 46 frozen embryos 46 frozen embryo 46 fetal tissue 46 cloned stem cells 46 miscarrying 45 donor insemination 45 unused embryos 45 IVF 45 donor sperm 45 cloning embryos 45 placentas 45 artificial insemination 45 semen 45 Shady Grove Fertility 45 ovum 44 vitro fertilization 44 ovarian tissue 44 Embryo 44 embryos implanted 44 gametes 44 Embryology Act 44 sperm 44 facilitates umbilical cord 44 ovary 43 vaginal secretions 43 mouse embryos 43 extracting stem cells 43 fertility 43 uterus 43 Embryos 43 somatic cell 43 semen sample 43 blastocyst 43 frozen semen 43 blastocysts 43 pre implantation genetic 43 unfertilized 43 pituitary glands 43 miscarried 42 laboratory 42 pregnant 42 Reproductive Biology 42 breastfeeds 42 Embryology Authority HFEA 42 female reproductive organs 42 cloned embryos 42 Fertility Clinic 42 tubal 42 babies 42 genetically identical 42 gestated 42 intrauterine insemination 42 impregnate 42 embryologist 42 vitro fertilization clinics 42 ovulate 42 Conjoined twins occur 42 Colostrum 42 female reproductive tract 42 cloned 42 anonymous sperm donor 42 baby 42 reproductive endocrinologist 42 IVF clinics 42 extract stem cells 42 conceive naturally 41 embryo transfers 41 vitro 41 Reproductive Ethics 41 haematologist 41 trouble conceiving 41 induced pluripotent stem cell 41 sperms 41 oocyte