passages.id: split_8_test_2159_passage
passages.type: progene_text
passages.text: The rapid blood flow and perfusion of macromolecules in the inflammatory breast cancer xenograft ( WIBC-9 ) , which exhibits a " vasculogenic mimicry " type of angiogenesis without the participation of endothelial cells and expresses high levels of the HER-2 / neu antigen , was evaluated in mice using 3D - micro - MR angiography using a novel macromolecular MR contrast agent [ G6-(1B4M-Gd ) ( 256 ) ] .