Enzyme 42

Enzyme 42 is an enzyme found in every life form on Planet 4546B but is only produced by the Sea Emperor and Sea Emperor Juveniles. It seems to be the only known cure for Carar. The Precursors were investigating how to produce the Enzyme 42.

Trivia

 * The name might be a reference to The Hitchhiker's Guide to the Galaxy, with the meaning of life being 42.