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medical.23andme.com · Freckles Spotty cell reception In people with freckles, some skin cells respond to sun exposure by mak'ng more pigment, while other cells apparently don't get

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Page 1: medical.23andme.com · Freckles Spotty cell reception In people with freckles, some skin cells respond to sun exposure by mak'ng more pigment, while other cells apparently don't get