TARDIS Index File

Morphic residue

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The Doctor shows Donna a morphic residue. (TV: The Unicorn and the Wasp)

Morphic residue was a viscous fluid left behind when certain species genetically re-encoded (shapeshifted). One species known to exhibit this ability were the Vespiforms, a race of giant wasps. (TV: The Unicorn and the Wasp)

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