How might a scientific breakthrough that allows adult stem cells to behave like embryonic stem cells affect previous ethical concerns associated with stem cell research and use? 1.) It would support the argument that adult stem cells that could be human beings should not be used for scientific purposes.

2.) It would support the argument that embryonic stem cells that could be human beings should be used for scientific purposes,

3.) It would create a new pathway to create a cell with the same benefits of umbilical stem cells

4.) It would create a new pathway to create a cell with the same benefits of embryonic stem cells.