Magnification of Mouse Retina (IMAGE) NASA/Johnson Space Center Caption This is a magnification of mouse retina flown in space, (A) low and (C) high magnification, with glial fibrillary acid protein in red. (B) and (D) show low and high magnification, respectively, of optic nerve with accumulation of beta-amyloid (brown) in the retinal ganglion cells. Credit <I>Gravitational and Space Research</I> Usage Restrictions with credit to <I>Gravitational and Space Research</I> License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.