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DeKalb, IL | Called a chimera, it results from a mutation in a cell, normally very early in development. In this case, the cell lost the ability to make pigment, and all cells derived from that cell have that same problem. Not 'normal' but not all that unusual, either. Don't recall whether it happens once in several hundred thousand or once in several million, but chimeras are out there, just not often seen. | |
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