From the USER GUIDE:
Nails: the DNA contained in fingernails is encased in hard keratin which protects it from degradation. In theory, it should be good to use for scalar transmission forever, and indeed some practitioners never change their specimens. However, my research suggests that since photonic energy has been shown to be intimately bound up with DNA, nail specimens may be best renewed each month. Russian experiments show that the photonic energy “imprint” which “shadows” DNA fades after this time.
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