In vertebrates, photoreceptors are some of the cells with most active metabolism, and even compared to the brain, they use more glucose as a metabolic fuel 8
Intravenous Glutathione Intravenous administration of glutathione has been explored for various conditions, particularly in clinical settings
Triangles are overestimates (i.e., the aliquots taken from the liquid culture at 42 O C did not yield any colonies on agar at 30 O C, so there could not have been more survivors in the liquid culture than values represented by the triangles)
This is not a story about some fringe supplement claim
The Leyden 2002 clinical evaluation in the Journal of Cosmetic Dermatology compared a copper tripeptide cream and serum against placebo in 67 women with photodamaged skin and found significant improvements in wrinkle depth, skin laxity, clarity, and density at 12 weeks [30]