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. 2025 Feb 10;122(7):e2422537122. doi: 10.1073/pnas.2422537122

Fig. 2.

Fig. 2.

SERS and SEIRA spectra of PAH/C in the human placenta. Left: (A) SERS and (B) SEIRA averaged spectra from placental samples collected from smoker and nonsmoker individuals. Dashed lines highlight the anticipated peak locations.