1.   Primitive streak stage embryos can also be manipulated using a dissecting microscope but the lower resolution makes such manipulations less precise.

2.   The simplest two-instrument cell injection technique for both primitive streak stage and for early somite stage embryos will be described.

3.   In one experiment Verfaillie said her lab tagged MAPCs with blue dye and then injected them into early stage mouse embryos.

4.   Embryonic stem cells are the unprogrammed master cells found in early stage embryos that can turn into nearly every cell type in the body.

5.   In one new experiment, researchers injected single cells into early stage mouse embryos and checked the resulting animals after birth.

6.   Stem cells are unprogrammed master cells found in early stage embryos that can turn into nearly every cell type in the body.

7.   The change would extend the law so that early stage embryos could also be used for research into diseases that emerge in adulthood.

8.   The change would extend the law so that early stage embryos can also be used for research into diseases that emerge in adulthood.