CX3CL1 and psoriasis: The migration of slanMo from the peripheral blood into psoriasis skin lesions may be facilitated by the local expression of the anaphylatoxin C5a, fractalkine (CX3CL1), and CXCL12 for which the respective receptors are expressed by slanMo (C5aR, CX3CR1, and CXCR4) (31).