Related by context. Frequent words. (Click for all words.) 67 cloning embryos 65 cloned stem cells 63 stem cells 63 Therapeutic cloning 63 cloned embryo 63 umbilical cord stem cells 62 embryonic stem cells 62 cloned embryos 62 iPSC 61 neural cells 60 IVF embryos 60 embryonic stem ES 60 fetal stem cells 60 induced pluripotent stem iPS 59 stem cell colonies 59 placental tissue 59 embryonic cells 59 iPSCs 59 stem cell 59 nonhuman primate 59 pluripotent cells 59 embryos 58 transfer SCNT 58 fertilized embryo 58 stem cells harvested 58 stem cells extracted 58 human embryos 58 hESC lines 57 hES cells 57 genetic manipulations 57 therapeutic cloning 57 iPS cell 57 pancreatic tissue 57 extract stem cells 57 vertebrate animals 56 induced pluripotent stem cell 56 adult stem cells 56 neural progenitor cells 56 biotechnologists 56 extracting stem cells 56 nanobacteria 56 synthetic genome 56 iPS cells 56 transplanted stem cells 56 bone marrow stem cells 56 Nayernia 56 pluripotent stem cell 56 transgenic animals 56 stem cells derived 56 Sertoli cells 56 embryo 55 human parthenogenetic stem 55 cone snails 55 commercial bioproduction 55 Embryonic stem cell 55 Amgen discovers develops manufactures 55 optogenetics 55 fetal tissue 54 unfertilized eggs 54 Adult stem cells 54 leftover embryos 54 teratomas 54 cloned embryonic stem 54 unfertilized egg 54 embryologists 54 mouse embryos 54 somatic cell 54 Neu5Gc 54 methylation patterns 54 destroys embryos 54 chimeras 54 hematopoietic cells 54 SCNT 54 genetically altered 54 fluorescent markers 53 pluripotent stem cells 53 fertilized embryos 53 embryo cloning 53 undifferentiated cells 53 extracted stem cells 53 unfertilized human 53 optical biosensors 53 melanoma tumors 53 pancreases 53 transgenic mouse 53 transgenic animal 53 bioimaging 53 cloning 53 genetically engineered mouse 53 blastocysts 53 induced pluripotent stem cells 53 fibroblast cells 53 phenotyping 53 stem cell research 53 unused embryos 53 biological molecules 53 mutant proteins 53 somatic cell nuclear 52 diabetic mice 52 metabolomic 52 germ cells