Tomonori Aoyama, Yong‐Han Paik, Sumio Watanabe, Benoît Laleu, Francesca Gaggini, Laetitia Fioraso‐Cartier, Sophie Molango, Freddy Heitz, Cédric Merlot, Cédric Szyndralewiez, Patrick Page, David A. Brenner – 14 July 2012 – Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX) generates reactive oxygen species (ROS) in hepatic stellate cells (HSCs) during liver fibrosis. In response to fibrogenic agonists, such as angiotensin II (Ang II), the NOX1 components form an active complex, including Ras‐related botulinum toxin substrate 1 (Rac1).