While the exact purpose of the pathogen is unknown, exposure to it has increased Chloe Armstrong's intellect and given her the ability to heal rapidly. She has an innate but unconscious understanding of the Nakai language, being able to recognize the meaning behind the symbols without actually understanding them. It also causes her to sleepwalk, during which time she seems compelled to study Destiny. It has also resulted in her growing hard alien skin in somewhat random patches, beginning with a patch that grew from the site of a bullet wound she suffered. (SGU: "Space", "Lost", "Incursion, Part 1", "Incursion, Part 2", "Intervention", "Pathogen", "Cloverdale", "Trial and Error", "Visitation")