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Screening for neuroprotective candidates in the lichen library. (A) Lichen extracts were tested to determine whether they were neuroprotective using an MTT assay. Results are presented as means ± standard errors (SEs) (n = 4). *** p < 0.001 vs. non-treated controls and ### p < 0.001 vs. MPP+-treated primary neurons (ANOVA with Fisher’s PLSD procedure). (B) HPLC data showed that the most abundant component in A10 was evernic acid.
