Attempts to Redefine "Embryo"

An old Nature editorial decries the sophistic attempt within bioethics and the life sciences to pretend that an embryo before implantation in a uterus isn't really an embryo. Nature supports ESCR, but its 2005 editorial notes that the redefinition of the term "embryo" is being pursued for political purpose rather than scientific accuracy. Secondhand Smoke; see Dianne Irving's comment on the difference between a cell and an organism (in better form) here.