Related by context. Frequent words. (Click for all words.) 67 embryo 62 fertilized egg 61 oocytes 60 ovum 60 oocyte 59 cloned embryos 59 somatic cell nuclear 59 stem cells 59 fertilized eggs 59 germ cells 58 embryos 57 blastocyst 57 ovary 55 embryonic cells 55 pancreatic cells 54 embryonic 54 ovaries 54 parthenogenesis 54 mouse embryos 54 blastocysts 54 progenitor cells 53 pluripotent stem cells 53 ovarian tissue 53 oligodendrocytes 53 SCNT 52 neural stem cells 52 hematopoietic stem cells 52 Embryos 52 embryonic stem cells 52 meiosis 51 therapeutic cloning 51 human embryos 51 destroying embryos 51 bone marrow stem cells 51 induced pluripotent stem cells 51 follicles 50 uterus 50 genetically identical 50 pluripotent 50 ES cells 50 fallopian tube 50 fibroblasts 50 fertilized 50 iPS cells 50 hair follicles 50 organism 50 retinal cells 50 islet cells 49 cells 49 sperm 49 testes 49 Adult stem cells 48 cultured cells 48 chromosomes 48 thymus 48 cardiomyocytes 48 melanocytes 47 adult stem cells 47 sperms 47 stem cells derived 47 tissue 47 nerve cells 47 fetal tissue 47 mesenchymal stem cells 47 epithelial cells 47 Stem cells 47 insulin producing 47 asexual 47 fertilization 47 Embryonic stem cells 46 fallopian tubes 46 hESCs 46 reproductive organs 46 endometrium 46 egg 46 chimeras 46 hormone estrogen 46 follicle 46 diseased cells 46 osteoblasts 46 reproductive cloning 45 Snuppy 45 epidermis 45 hepatocytes 45 cloning 45 stem cell 45 womb 45 tissues 45 ova 45 mitochondria 45 offspring 45 immune cells 45 hair follicle 45 secretions 45 fatty tissue 45 eggs 45 autologous 44 pancreas 44 T lymphocytes 44 yeast cells 44 iPS