ɪn ˈɔːɹdɚ tə kəmjˈuːnᵻkˌeɪt wɪððə nˈeɪbɚɹɪŋ tˈɪʃuːz ðɪ ˌɑːɹpˌiːˈiː ɪz ˈeɪbəl tə sᵻkɹˈiːt ɐ lˈɑːɹdʒ vɚɹˈaɪəɾi ʌv fˈæktɚz ænd sˈɪɡnəlɪŋ mˈɑːlɪkjˌuːlz.
In order to communicate with the neighboring tissues the RPE is able to secrete a large variety of factors and signaling molecules.