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Detailed interactions within the PD-1/cemiplimab interface. (A) Stereoscopic view of the interactions, including hydrogen bonds, ionic interactions, and van der Waals contacts between PD-1 and cemiplimab. (B) Stereoscopic view of the water-mediated hydrogen bonds. PD-1, heavy, and light chains of cemiplimab are colored gray, pale red, and pale yellow, respectively. Hydrogen bonds and ionic interactions are depicted as dotted lines.
