When the body is exposed to high levels of metals, it rapidly uses up its stores of glutathione to keep up with the demand
Consistency is crucial for achieving optimal results
Glass vials with rubber stoppers allow repeated needle penetration while maintaining a sealed environment

For example, in order to maintain intracellular redox homeostasis and build a powerful antioxidant defense, cancer cells are typically characterized by high level of antioxidants, especially GSH with a high concentration of 10 mM, which is approximately ten times higher than that in normal cells ( In general, elevated GSH can be observed in many cancers, including lung cancer, ovarian cancer, breast cancer, and head-neck cancer, and this adaptive upregulation of GSH has various effects on tumor advancement, metastasis, and drug resistance ( via the multidrug resistance associated proteins (MRPs) efflux pump ( 3 GSH-responsive and -exhausting metal nanomaterials 3.1 Inorganic nanomaterials Inorganic nanomaterials that have intrinsically unique physicochemical properties and can provide satisfactory functionality show enormous potential in biomedical applications, especially in cancer therapy ( 2 O 2 , realizing tumor-specific catalytic therapy with response to the TME featuring overexpressed GSH and H 2 O 2 (Yin et al., 2019)
