Related by context. Frequent words. (Click for all words.) 53 cloned embryo 52 IVF treatment 52 donor insemination 51 cloned stem cells 51 Vitro Fertilization 51 donor sperm 51 IVF 50 embryo 50 vitro fertilization IVF 50 artificial insemination 50 artificially inseminated 49 embryos 49 inseminated 49 undergoing IVF 49 vitro fertilization 49 IVF cycles 48 sperm 48 cloned embryos 48 sperms 48 cervical smear 47 infertility treatments 47 skin prick 46 ovum 46 pre implantation genetic 46 unfertilized eggs 45 infertility 45 infertile couples 45 Embryo 45 genetically 44 oocytes 44 conceive naturally 44 asexual reproduction 44 blastocyst 44 semen sample 44 vitro 44 transplanted tissue 44 Embryology Authority 44 embryo transfers 44 Genetic testing 44 ovarian tissue 44 pregnancy 44 fertilized eggs 44 PGD 44 frozen embryos 43 insemination 43 ectopic pregnancies 43 frozen embryo 43 infertile 43 Snuppy 43 IUI 43 Embryology Authority HFEA 43 Embryos 43 fertilized embryos 43 vitro fertilization clinics 43 leftover embryos 43 IVF treatments 43 rhesus macaque 43 fertility 43 gametes 43 oocyte 43 mitochondrial genome 42 Boisselier 42 unused embryos 42 prenatally 42 sperm donation 42 fertility treatments 42 fertilized egg 42 Wilmut 42 inseminate 42 Human Papillomavirus 42 semen 42 DNA 42 ovarian tumor 42 vaginal swabs 42 mitochondrial DNA 41 spermatozoa 41 Trisomy 41 offspring 41 ovarian function 41 IVF clinics 41 frozen semen 41 fertility clinics 41 HFEA 41 terminating pregnancy 41 genetic 41 aneuploidy 41 serological 41 human embryos 41 Mitochondrial DNA 41 premature menopause 41 cryopreserved 41 Biobank 41 Assisted Reproduction 41 cloned cow 41 ovary 41 unfertilized egg 41 Microarray 40 toxoplasmosis 40 semen samples 40 Human Fertilization 40 fecal samples