Heme Oxygenase 1 (HO-1) is a stress-inducible enzyme that catalyzes heme degradation into carbon monoxide, biliverdin, and iron, conferring antioxidant, cytoprotective, and anti-inflammatory effects. HO-1 is robustly upregulated in response to oxidative stress, hypoxia, and inflammation, and its dysregulation contributes to cancer progression, immune suppression, fibrosis, cardiovascular disease, and autoimmune disorders. Catalina’s stringently validated Heme Oxygenase 1 antibodies provide high specificity and reproducibility for reliable target detection and quantification, supporting advanced research in redox biology, oncology, immunology, and translational medicine.