IL6 and acute kidney injury: Serum IL‐6 is elevated early (2 h) and late (24 h+) after AKI in both ischemic and bilateral nephrectomy in mice compared with sham (Klein et al. 2008; Ahuja et al. 2012; Hoke et al. 2007; Hayase et al. 2020; Grigoryev et al. 2008; Nakazawa et al. 2017).