New Stem Cell Method Avoids Destroying Embryos - However...

Biologists have developed a technique for establishing colonies of human embryonic stem cells without destroying embryos, a method that, if confirmed in other laboratories, would seem to remove the principal objection to stem cell research.

“There is no rational reason left to oppose this research,” said Dr. Robert Lanza, vice president of Advanced Cell Technology and leader of a team that reported the new method in an article published online by the journal Nature.

But critics of human embryonic stem cell research raised other objections, citing the possible risk to the embryo from using the technique, and the fact that it depends on in-vitro fertilization, the generation of embryos outside the womb from a couple’s egg and sperm.

The new technique would be performed on an embryo when it is two days old, after the fertilized egg has divided into eight cells, known as blastomeres.

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Critics, however, have a range of objections to the research. Catholic bishops, in particular, oppose both in-vitro fertilization and P.G.D. testing, and therefore still object to the research, even though the cells would be derived from an embryo that is brought to term.

Richard Doerflinger, deputy director for pro-life activities at the United States Conference of Catholic Bishops, said the church opposed in-vitro fertilization because of the high death rate of embryos in fertility clinics and because separating procreation from the act of love made the embryo seem “more a product of manufacture than a gift.”