<prompt> Fractalkine is also called ---.CXCL8RANTESMCP-1CX3CL 1  <response>: 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 forms: a cell 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.Reference-Robbins BASIC PATHOLOGY 10th edition pg-172 