Facebook Twitter YouTube Instagram Harvard Medical School Harvard Medical School on Facebook Tweets by HarvardMed Harvard Medical School on Twitter Harvard Medical School on YouTube Congratulations to Brian Chow, the winner of the 2018 Quad Photo Contest! The photo depicts the blood-retinal barrier. This barrier serves to nourish and protect the retina, allowing for proper vision. Chow works in the laboratory of neurobiology professor Chenghua Gu. #HarvardMed #neurobiology Note: This image was originally posted with an inaccurate description. The caption has been updated to properly reflect the research. A post shared by Harvard Medical School (@harvardmed) on Jun 11, 2018 at 9:43am PDT Harvard Medical School on Instagram