

After an unknown duration, the CSF will not work due to adaptive differentiation of the 'Immortal' stem cells, and will lead to disturbing physical deformities for the tardy recipient. Someone can only be Immortalized if they receive CSF from a recently 'activated' immortal.Sarah Jordan was Immortalized after receiving an infusion of Julia Walker's CerebroSpinal Fluid, which was only intended to cure her cancer. It is believed that Julia Walker inherited the potential for immortality from her father, Hatake, and it was activated by her Narvik-B infection and Hatake's injection of his blood into Julia Walker.Jordan was Immortalised herself, it is now known that their CSF is also capable of Immortalizing another mortal (provided the Immortal genetic material has not had time to transcribe specifically). Their CSF (CerebroSpinal Fluid) is capable of curing cancer.Also, they are usually capable of eventually recovering from many different types of wounds that would be fatal to normal humans (with Hatake healing fast after being burned in a snowmobile accident), provided they are largely 'intact' (Julia's left ring finger did not grow back, perhaps because it was not reattached in time). Accelerated Healing - Immortals generally heal faster than normal human beings.Germain outbreak, Mycosis is ravaging the mainland and killing off most of the Immortals. Immunity - As they are un-aging and immortal, they are either outright immune, or at least successfully resistant to most conventional diseases, ailments, and even 'mortally' lethal toxins.Multiple immortal deaths have been seen on-screen with various ways such as shooting, being bombed, and even decapitated. Immortality - As their name implies the immortals are immortal and don't age, unless killed by violence.The only traits that makes them distinguishable from humans is their silver eyes (hidden with either coloured contact lenses or dye being injected into the corneas), agelessness, and their faster healing rates and wound regeneration. Immortals have the appearance of the general population ranging in ethnicity, gender, age and weight. Also, the oldest immortal seen so far was Hatake, at over 500+ years old. Jordan was an immortal, that she couldn't have been because she "wasn't there." Although in season 1, Gunnar referred to himself as being a viking whether this is true, or if he was rambling, is unknown. Although their origins are unclear, Brother Michael noted, upon discovering that Dr. The Immortals are a group of 500 people gifted/cursed with immortality.
