For example, CCR9/α4β7 and CCL25/MadCAM for gut homing, CXCR3 and CXCL9-11 for inflammatory liver diseases and specifically, CCR9, αEβ7, CCL25/E-cadherin in AISC and PSC [6, 8, 9, 32]. The gene discussed is CCR9; the disease is liver disorder.