jsc2023e054752 (9/27/2023) --- Fluorescein angiogram of the microvascular circulation of the mouse retina. Preclinical Validation of a Modifier Gene Therapy to Prevent Spaceflight Associated Oxidative Stress and Apoptosis in Microgravity Mouse Model of Dry Macular Degeneration (Rodent Research-28 or RR-28) tests the effect of a gene therapy on retinal structure and function during spaceflight. (Image courtesy Oculogenex Inc.)