مجموعه تمایزی ۶۹ (انگلیسی: Cluster of Differentiation ۶۹) یک پروتئین تراپوستهای از نوع لکتین نوع سی است که در انسان توسط ژن «CD69» کُدگذاری میشود.
این پروتئین، یکی از نخستین نشانگرهای فعال سازی است که بر روی سطح سلولهای خونساز اولیه، لنفوسیتهای تی و بسیاری دیگر از انواع سلولهای سیستم ایمنی بدن ظاهر میشود.[۴] این مولکول همچنین در تمایز لنفوسیتهای تی و نگهداشتن آنان در درون احشاء لنفاوی نقش دارد.
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Liu CC, Huang KJ, Lin YS, Yeh TM, Liu HS, Lei HY (October 2002). "Transient CD4/CD8 ratio inversion and aberrant immune activation during dengue virus infection". Journal of Medical Virology. 68 (2): 241–52. doi:10.1002/jmv.10198. PMID12210415.
Foerster M, Haefner D, Kroegel C (October 2002). "Bcl-2-mediated regulation of CD69-induced apoptosis of human eosinophils: identification and characterization of a novel receptor-induced mechanism and relationship to CD95-transduced signalling". Scandinavian Journal of Immunology. 56 (4): 417–28. doi:10.1046/j.1365-3083.2002.01111.x. PMID12234263.
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