I recommend a free antibody database available at labome.com. For antibodies to NOS2 for mouse brain tissue you can check the following link: https://www.labome.com/review/gene/human/BRG1-antibody.html. Santa Cruz Biotechnology provides mouse monoclonal (G-7) sc-17796 ab used in immunohistochemistry - paraffin section on human samples at 1:1000 (Rao et al., Histopathology. 2015). Also, Abcam has rabbit polyclonal ab4081 for IHC (Lambert et al., Mol Cell Biol. 2013). In addition, Sigma-Aldrich offers anti-SMARCA4 rat monoclonal (5B7) SAB4200195 for IHC (Córdova-Fletes et al., Neurogenetics. 2015). I hope this comment if helpful.