The retinal pigment epithelium cells:
a. esterify and store excess retinol
b. transport retinol binding protein from blood to subretinal space
c. are secured laterally to each other by tight junction
d. all above
a. esterify and store excess retinol
b. transport retinol binding protein from blood to subretinal space
c. are secured laterally to each other by tight junction
d. all above