🌐EnglishEnglishDeutschItalianoTiếng Việtفارسی한국어中文日本語EntityQ21686041· pop 10· linked from 69 articlesimmune checkpointregulators of the immune systemAvailable in 10 languagesDeutschItalianoDanishHebrewTiếng ViệtUkrainianzh_min_nanفارسی한국어via Wikidata sitelinks · CC0Connectionsnatural killer cellEntitycytotoxic T-lymphocyte associated protein 4ProteinEuropean UnionCategoriesImmune system