A retinal Tricell culture model. (A) Phase contrast image of a Tricell culture mixture of human retinal microvascular endothelial cells, pericytes and Müller cells representing the inner blood-retinal barrier (IBRB). (B) A live/dead stain of the retinal Tricell culture. (C) Triple labeled immunohistochemistry (IHC) of the IBRB cell culture (arrows indicate an endothelial (EC), pericyte (PC) and Müller cell (MC)). Magnifications = 200x.