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BaP alters sphingolipid and FFA metabolism in alveolar type II cells. (A) PCA scatter plot of the lipid metabolites in A549 cells. (B) Heat map of the lipid metabolic profile in A549 cells. (C) PLS-DA scatter plot of the lipid metabolites in A549 cells. (D) VIP score plot of the lipid metabolic profile in A549 cells. A549 cells were treated with control or BaP (4 μM) for 6 h (n = 5–6).
