SOD1 and amyotrophic lateral sclerosis: The dose-response experiment with PBMC's of two ALS patients and the wild type SOD-1 proteins showed induction by the fibrillar and APo forms, but not the AI form; and the experiment with the G37R and D101N SOD-1 mutant SOD-1 proteins, showed induction by the AI and APO forms, but not the fibrillar form.