This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Fractalkine is also called  --------------. \nSelect and explain. \nA. CXCL8, B. RANTES, C. MCP-1, D. CX3CL 1', 'role': 'user'}, {'content': 'Answer: D \nExplanation: CX3 C chemokines contain three amino acids between the first two cysteines. The only known member of this class is called fractalkine (CX3 CL1). This chemokine exists in two\xa0 forms:\xa0 a\xa0 cell\xa0 surface-bound protein induced on endothelial cells by inflammatory cytokines that promotes strong adhesion of monocytes and T cells, and a soluble form, derived by proteolysis of the membrane-bound protein, that has potent chemoattractant activity for the same cells.\nReference-Robbins BASIC PATHOLOGY 10th edition pg-172', 'role': 'assistant'}]