Retinal Blood Vessels (IMAGE) Gladstone Institutes Caption Blood vessels (shown in red) in a mouse retina that is missing the p75NTR protein. Black areas indicate a lack of blood vessels in the absence of p75NTR. Dr. Akassoglou's lab found that p75NTR was critical for kick-starting increased blood vessel production during hypoxia. Credit Natacha Le Moan/Gladstone Institutes Usage Restrictions Image may only be used with appropriate caption or credit. 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.