Figure 4. Phagocytic pathway genes expressed in the retinal pigment epithelium. The majority of genes showed constant expression levels throughout development. The expression of MERTK and ITGAV (integrin αν) decreased during development, but the magnitude of the changes was not very large; therefore, these genes did not appear in our differentially expressed gene list. The only differentially expressed gene was MYO7A, the expression of which decreased during development.