passages.id: split_1_test_1306_passage
passages.type: progene_text
passages.text: The ORF 3 protein was expressed in insect cells by using two different baculovirus recombinants ; one recombinant contained the entire 3' end of the genome beginning with the ORF 2 coding sequences ( ORFs 2+3) , and the second recombinant contained ORF 3 alone .