CD4 and acute kidney injury: As the angiotensin type 2 receptor (AT<sub>2</sub>R) is emerging as reno-protective and anti-inflammatory, this study aimed to analyze the phenotypes of macrophages and helper T cells (CD4) in response to AT<sub>2</sub>R activation in ischemia-reperfusion (IR)-induced AKI.<h4>Methods</h4>Sprague Dawley rats were subjected to 30 min IR without and with AT2R agonist C21 administration.