glutathione in meat for Food and Health Applications with Emphasis on Extraction, Identification, and Quantification Methods: A Review Ask A Dietitian, Volume XI:

Because many imaging modalities rely on electromagnetic radiation to generate signals (for example, optical and optoacoustic imaging, computed tomography and positron emission tomography), this phenomenon can be used to both activate a drug and monitor tissue response, creating a theranostic synergy

Laboratory studies have also examined its proposed role in modulating gene expression, circadian and pineal regulatory pathways, oxidative-stress responses, and the development of spontaneous tumors in rodent models

For instance, the activation of JNK can lead to the phosphorylation of cAMP response element-binding protein (CREB), a critical transcription factor that promotes BDNF expression

Stuart (USA authors) Very comprehensive book about B12 deficiency with lots of case studies