Related by context. Frequent words. (Click for all words.) 62 embryonic stem cell 59 human embryonic stem 53 stem cell research 48 Embryonic stem cell 47 embryonic stem cells 45 human embryos 44 stem cell 43 Stem cell 42 embryonic cells 41 therapeutic cloning 41 human cloning 41 destroying embryos 41 Stem Cell Research 40 Nancy Reagan 38 offshore drilling 38 banning gay marriage 37 Partial Birth Abortion Ban 37 Geron Corporation 37 adult stem cell 37 NIH 37 legalizing gay marriage 36 warrantless surveillance 36 Pluristem 36 genetically engineered crops 36 stem cells derived 36 gay marriage 36 Foreign Intelligence Surveillance 36 Bush 36 CNN Opinion 36 judicial nominees 36 StemCells 35 constitutional amendment banning 35 comparative effectiveness 35 stem cells 35 antiabortion 35 Stem Cell 35 warrantless wiretapping program 35 Geron 35 sex marriage 35 Alito 35 constitutional amendment defining 35 filibusters 35 outer continental shelf 34 genetically modified foods 34 reproductive cloning 34 Washington DC LifeNews.com 34 House Speaker Nancy 34 legalize gay marriage 34 genetically modified crops 34 actor Christopher Reeve 34 counsel Fred Fielding 34 CIRM 34 pluripotent 34 Lamberth 34 biologic drugs 33 hydrogen fuel 33 warrantless domestic 33 warrantless eavesdropping 33 Outer Continental Shelf 33 egg laying hens 33 Royce Lamberth 33 telomerase 33 biomedical research 33 National Institutes 33 muscular dystrophy 33 Roe v. Wade 33 embryology 33 Craker 33 unilateral sanctions 33 White House 33 hESCs 33 Neuralstem 33 CIA interrogators 33 warrantless wiretapping 33 Harvard Stem Cell 33 scientific breakthroughs 33 legalized abortion 33 Terrorism Risk 32 regulate greenhouse gases 32 adult stem cells 32 cloned animals 32 assisted suicide 32 Stem Cell Biology 32 repealing 32 Abortion foes 32 torture memos 32 widow Vicki 32 Patriot Act 32 stem cell therapies 32 Hyde Amendment 32 harsh interrogation tactics 32 Gov. Arnold Schwarzenegger 32 pluripotent stem cells 32 beef imports 32 abortion 32 eavesdropping 32 somatic cell nuclear 32 nondefense 32 warrantless wiretaps 32 moratorium 32 Gov. Jan Brewer