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Network of the identified key biomarkers and pathways in plasma of patients with amyotrophic lateral sclerosis. The metabolites colored blue or red represent declining or increasing levels, respectively. Aa: acyl-acyl; ae: acyl-alkyl; ADMA: asymmetric dimethylarginine; OH: hydroxy; lysoPC: lysophosphatidylcholine; PC: phosphatidylcholine; SM: sphingomyelin.
