'Very unusual': 68-year-old woman with new blood type found; compatible only with herself

Scientists have made a rare discovery. They have identified a new blood type. This blood type is called Gwada Negative. It was found in a 68-year-old woman from Guadeloupe. The woman's blood has a unique genetic mutation. Researchers used advanced DNA sequencing to find it. This discovery can improve care for patients with rare blood types.

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