The present invention relates generally to immunointeractive molecules and more particularly antibodies which bind to vascular endothelial growth factor-B (VEGF-B) or its functional or structural equivalent and inhibit the biological activity of VEGF-B. In particular, the present invention relates to deimmunized such as humanized or human antibodies that bind to VEGF-B and inhibit the biological activity of VEGF-B. These antibodies have uses in the treatment or prevention of diseases associated with perturbations in normal vasculogenesis or angiogenesis or vascular remodelling. The present invention further contemplates a method of modulating diseases associated with perturbations in normal vasculogenesis or angiogenesis or vascular remodelling by the administration of the subject antibodies. The present invention further provides an assay system useful for identifying antibodies which bind to VEGF-B and block the biological activity of VEGF-B. Accordingly, a method of screening for inhibitors of the biological activity of VEGF-B is also provided.