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which includes locks of hair, nail clippings, baby teeth and DNA. They've even collected 9,000 placentas from some of the births, which are now pickled in plastic buckets in a secure storage warehouse.
Lessons from the longest study on human development | Helen Pearson
which includes locks of hair, nail clippings, baby teeth and DNA. They've even collected 9,000 placentas from some of the births, which are now pickled in plastic buckets in a secure storage warehouse.
Lessons from the longest study on human development | Helen Pearson