Treatment of lesions of pathological angiogenesis, especially tumors, rheumatoid arthritis, diabetic retinopathy, age-related macular degeneration, and angiomas. A conjugate is used comprising a molecule that exerts a biocidal or cytotoxic effect on target cells in the lesions and an antibody directed against an extracellular matrix component which is present in such lesions. The antibody may be directed against fibronectin ED-B. The biocidal or cytotoxic molecule may be interleukin-2 (IL-2), doxorubicin, interleukin-12 (IL-12), Interferon-³ (IFN-³), Tumor Necrosis Factor ± (TNF±) or Tissue Factor protein (which may be truncated).
