| human embryo | 27.85 | Do you approve of doctors using human embryos for research? | ||
| frozen embryo | 5.73 | A frozen embryo. | ||
| cloned embryo | 4.81 | A cloned embryo has two sets of DNA, too. | ||
| early embryo | 1.97 | And an early embryo looks like nothing so much as a plate of cells. | ||
| surplus embryo | 1.51 | The surplus embryos are often stored in freezers. | ||
| developing embryo | 1.32 | In a developing embryo, they produce the cells that become the body parts. | ||
| discarded embryo | 1.25 | However, to the discarded embryos it is but a death trap. | ||
| resulting embryo | 1.25 | The resulting embryos are called parthenotes. | ||
| new embryo | 0.99 | No new embryos could be destroyed for federal research. | ||
| leftover embryo | 0.92 | Leftover embryos are usually frozen. | ||
| excess embryo | 0.86 | Fertility centers discard relatively few excess embryos. | ||
| cloning embryo | 0.72 | By cloning embryos, scientists say, they can avoid using the discarded embryos. | ||
| first embryo | 0.66 | First embryos from class of big dinosaurs found. | ||
| fertilized embryo | 0.59 | The infants, Riccardo and Samantha, came from artificially fertilized embryos, he said. | ||
| single embryo | 0.59 | Each stem cell line comes from a single embryo. | ||
| unused embryo | 0.59 | It stores all unused embryos in giant liquid nitrogen freezers. | ||
| extra embryo | 0.53 | Extra embryos are either destroyed or stored frozen. | ||
| growing embryo | 0.46 | In the growing embryo it divides the brain into segments. | ||
| remaining embryo | 0.46 | The remaining embryo survived to become Dolly. | ||
| tiny embryo | 0.46 | The cells are extracted from embryos so tiny they can fit on the tip of a needle. |