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. 2022 Jan 25;12:799504. doi: 10.3389/fphar.2021.799504

FIGURE 2.

FIGURE 2

Screening of markers. (A) Principal component analysis; (B) OPLS-DA results of sulfured and unsulfured Baizhi; (C) markers of sulfured and unsulfured Baizhi; (D) structures of the markers.