aPD1 (IMAGE)

Johns Hopkins Medicine

aPD1

Caption

When the tumor protein PD-L1 (blue) engages with PD-1 (purple), it damps the response of killer T cells (pink). Molecules that engage PD-1, called antibodies (yellow), can prevent this interaction from taking place.

Credit

Alyssa Kosmides and Randall Meyer, Johns Hopkins Medicine

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