The Immortality Elixir (
Elixir #51 was developed during the Section 13 years of experimentation by Nikolai Eminescu. Taking blood from fifty-nine demons with powerful regenerative abilities, it was injected into dead mice and human flesh. Taking blood from samples showing arrested necrosis, it was applied to the entire Lucifer test group. Of this group, eleven showed heightened cellular regeneration. From this group, cells were extracted and refined to produce this elixir. It ultimately proved ineffective.
Elixir #1021 was the first new substance created through the experiments on Tamamo Kamiki. One of the many immortality elixirs created by the Far East Laboratory, if it had worked correctly, it would bestow immortality. However, if not, it would attack the central nervous system and slowly turn bodily tissue necrotic. It was originally tested on Maria Yoshida.
Elixir #1117 was one of the later developments in the pursuit of the Immortality Elixir. While it did not achieve the desired result, it did serve to sustain Lucifer's body without degradation or necrosis.