Fig. 4From: Identification, quantification and age-related changes of human trabecular meshwork stem cellsRepresentative confocal images of TM double immunostained for ABCG2 (FITC-green), p75 (Alexa 633- red) and overlay of ABCG2 and p75 expression with nuclear counterstain PI (blue). The magnified images of the Schwalbe’s line region (dotted region in the lower magnification) is shown below. Immunostaining of TM sections identified ABCG2 high positive and p75 positive cells to be restricted to the Schwalbe’s line region of the human TMBack to article page