passages.id: split_1_test_71_passage
passages.type: progene_text
passages.text: During the course of work aimed at isolating a rice gene from Oryza australiensis by PCR , the oligonucleotide primers used were found to generate a fragment that showed sequence homology to the endonuclease ( EN ) region of the maize non - LTR retrotransposon ( LINE ) Cin4 .