passages.id: split_8_test_2845_passage
passages.type: progene_text
passages.text: Almost 50 % of the genes analyzed showed some relation with Hox protein directly or indirectly ; i.e. , tubulin beta 5 , EF-1 beta and PCNA have been reported to contain putative Hox binding regulatory sites and genes like vimentin , pgam1 and nucleophosmin to be regulated by RA , a potent modulator of Hox expression .