The following blurb (from page 12 of this PDF of the 10/11 Rhode Island Catholic) reminds us that stem-cell research can be moral and miraculous:

Three year-old Andrew Mueting of Dodge City is a bright, happy-golucky, energetic little boy. But when he was four months old, doctors gave him a bleak prognosis. Born with malignant infantile osteopetrosis, an exceedingly rare blood disorder that affects approximately 20 U.S. babies a year, Andrew was expected to spend his few years of life fighting anemia and infections, struggling with weak bones and eventual blindness and deafness. Now Andrew is expected to live a long, healthy life with few ill effects. In treatments at St. Jude Children’s Research Hospital in Memphis, Tenn., “Andrew had to go through eight days of chemotherapy to completely wipe out his immune system,” said his father, Nick Mueting. “During the last five days of his treatment, I took a medicine that helped my body produce a lot of stem cells in my blood. At the end of that period … I was hooked up to a machine for five hours as it extracted the stem cells from my blood.” After that, 50 cubic centimeters of the father’s stem cells were injected into his son’s blood.

I’d note that embryonic stem cells have still not produced any actual cures, although of controversy, ill will, and (in my opinion) unhealthy worldviews they’ve produced much.