ANXA2 and neoplasm: To characterize anxA1 expression in tumor vasculature, we initially assessed a number of commercially available anti-anxA1 monoclonal antibodies for a) binding to both human and mouse anxA127-346 as previously reported in tumor vasculature, b) but not binding to other annexin family member, e.g. annexin A2 (anxA2) [19, 20].