We evaluated the expression levels of a series of chemokines (CXCL1, CXCL2, CXCL3 and CXCL5) and their receptor CXCR2 in Ang II-treated retinas to investigate the role of chemokines and their receptors in hypertensive retinopathy. The gene discussed is AGT; the disease is hypertensive retinopathy.