. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "apex1_human"^^ . "Apurinic-apyrimidinic endonuclease 1"^^ . "REF-1"^^ . "APEX nuclease"^^ . "Redox factor-1"^^ . "APEX"^^ . "APEX1"^^ . "APE"^^ . "HAP1"^^ . "REF1"^^ . "APX"^^ . "APE1"^^ . . . . . . . . . "DNA-(apurinic or apyrimidinic site) lyase"^^ .