ˌɛpɪθˈɛlɪəl tɹˈænspoːɹt: æz mˈɛnʃənd əbˈʌv, ˌɑːɹpˌiːˈiː kəmpˈoʊz ðɪ ˈaʊɾɚ blˈʌd ɹˈɛtɪnəl bˈæɹiɚ, ðɪ ˌɛpɪθˈiːliə hɐz tˈaɪt dʒˈʌŋkʃənz bᵻtwˌiːn ðə lˈæɾɚɹəl sˈɜːfɪsᵻz ænd ɪmplˈaɪz ɐn ˌaɪsəlˈeɪʃən ʌvðɪ ˈɪnɚ ɹˈɛtɪnə fɹʌmðə sɪstˈɛmɪk ˈɪnfluːənsᵻz.
Epithelial transport: As mentioned above, RPE compose the outer blood–retinal barrier, the epithelia has tight junctions between the lateral surfaces and implies an isolation of the inner retina from the systemic influences.