Integrin β7 is an integrin protein that in humans is encoded by the ITGB7 gene. Besides, It can pair with ITGA4 (CD49d) to form the heterodimeric integrin receptor α4β7, or with ITGAE (CD103) to form αEβ7. α4β7 integrin plays a crucial role in leucocyte homing to the intestinal mucosa...