passages.id: split_6_test_1258_passage
passages.type: progene_text
passages.text: The strategy of cloning was based on the functional similarities between H(2)O(2) generation in leukocytes and the thyroid , according to the hypothesis that one of the components of the thyroid system would belong to the gp91 ( Phox ) / Mox1 gene family and display sequence similarities with gp91 ( Phox ) .