The effect of light on the quantity of phagosomes in the pigment epithelium.
D000818:Animals; D003623:Dark Adaptation; D008027:Light; D010587:Phagocytosis; D010786:Photoreceptor Cells / Q000502:physiology; D010857:Pigment Epithelium of Eye / Q000502:physiology* / Q000648:ultrastructure; D011894:Rana pipiens; D013997:Time Factors