The activity of an immune-regulating protein is significantly lower just before or during a relapse in people with neuromyelitis optica spectrum disorder (NMOSD), a recent study has found. This discovery could lead to new ways to monitor disease activity and develop treatments. The protein, called the aryl hydrocarbon receptor (AHR), is a ligand-activated transcription factor. […] The post AHR protein may be a biomarker for NMOSD relapses appeared first on Neuromyelitis News.