oral melanotic macule slideshare Pigmented lesions Melanotic macule. Benign. Dark spot

Environ Sci Pollut Res Int 2016;23:824459

Several factors can contribute to the loss of dopamine-producing cells

In contrast, coal-derived CQDs exhibited potent inhibition of SARS-CoV-2 replication in vitro , achieving more than 95% reduction in viral growth at half-maximal inhibitory concentration (IC 50 ) of approximately 5.47 g/mL, with minimal cytotoxicity in normal cell lines, indicating genuine antiviral activity in a human-relevant viral system [123]

Remove non-specific adsorbed proteins

Glutathione also acts as an antioxidant that acts to prevent oxidative stress in most cells and help to trap free radicals that can damage dna and rna