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Medical researchers may have found a way to reverse the leading cause of blindness in older people. Medical correspondent Dr.

Discusses "60 Minutes" probe of "stem cell charlatans" who promise cures for incurable diseases

A lot of stem cell studies give hope but ultimately don't pan out.

After experimental stem cell therapy, patients' failing hearts showed better function and less scarring

Using an ultrafast femtosecond laser, researchers at Tufts University in Medford, Mass., were able to label, draw patterns on, and remove individual melanocytes cells from a species of frog tadpole (Xenopus) without damaging surrounding cells and tissues.