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jan 1, 1958 - Aperture Science begins forming control groups for experimentation with cranial microchip implantation. (Portal 2: The Official Guide)

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- 1958
- Aperture Science constructs Test Shaft 09 Chambers 27 and 28, and begins forming control groups for experimentation with cranial microchip implantation.

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Date:

jan 1, 1958
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~ 67 years ago
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