passages.id: split_8_test_2645_passage
passages.type: progene_text
passages.text: The 3(' ) --> 5 ( ') - exonucleolytic activity of human apurinic / apyrimidinic endonuclease 1 ( APE1 ) on mispaired DNA at the 3(')-termini of recessed , nicked or gapped DNA molecules was analyzed and compared with the primary endonucleolytic activity .