日韩av大片在线观看欧美成人不卡|午夜先锋看片|中国女人18毛片水多|免费xx高潮喷水|国产大片美女av|丰满老熟妇好大bbbbbbbbbbb|人妻上司四区|japanese人妻少妇乱中文|少妇做爰喷水高潮受不了|美女人妻被颜射的视频,亚洲国产精品久久艾草一,俄罗斯6一一11萝裸体自慰,午夜三级理论在线观看无码

CD184, also known as CXCR4 or fusin, is a 45 kD seven-transmembrane G-protein-linked CXC chemokine receptor. It is widely expressed on various human cells, including leukocytes, hematopoietic stem cells, epithelial cells, endothelial cells, and cancer cells. This receptor is specific for stromal-derived factor-1 （SDF-1, also called CXCL12） and plays a crucial role in cell migration, hematopoiesis, cell homing, and the proliferation of non-hematopoietic cells. Additionally, CXCR4 serves as a co-receptor for T-cell tropic HIV viruses, enabling their entry into human lymphocytes. In cancer, CXCR4 is involved in tumor cell survival, proliferation, migration, and metastasis, making it a potential therapeutic target.