Angiopoietin-2 causes pericyte dropout in the normal retina: evidence for. involvement in diabetic retinopathy. - Hammes,H.P.; Lin,J.; Wagner,P.; Feng,Y.; vom Hagen,F.; Krzizok,T.; Renner,O.; Breier,G.; Brownlee,M.; Deutsch,U. (Diabetes, 2004)