The situation is radically different in red blood cells, because the other NADPH-producing enzymes have been sacrificed in the course of erythroid cell differentiation
Z., Malek, R., Danial, E., & Wadaan, M
Activation of endosomal TLR7/8 during SARS-CoV-2 may increase the inflammatory response resulting in severe and potentially lethal immunopathological effects in COVID-19 patients as consequence of the simultaneous release of pro-inflammatory cytokines and chemokines
Beyond that landmark study, the evidence base includes research showing GHK-Cu enlarges hair follicle size, extends the anagen (active growth) phase, stimulates dermal papilla cells (the cells that control follicle activity), promotes angiogenesis (blood vessel growth) to the scalp, and reduces the DHT-related inflammation that causes follicle miniaturization in androgenetic alopecia
For many, the combination of these two leads to something known as Chronic Inflammatory Response Syndrome (CIRS) , where the immune system becomes persistently overactive