checkpoint protein

American

[chek-point proh-teen] / ˈtʃɛkˌpɔɪnt ˌproʊ tin /

noun

Biochemistry. any of several proteins that keep the immune system from attacking and destroying healthy cells.

Other Word Forms

Noun Inflected Forms

checkpoint proteins

plural

Example Sentences

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checkpoint protein

Their goal was to uncover how PD-L1, a key immune checkpoint protein, is selectively loaded into sEVs and to determine whether this pathway could be targeted therapeutically.

From Science Daily ● Jan. 28, 2026

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023