下列何者屬於血管新生抑制因子(angiogenesis inhibitory factor)？
血管內皮細胞生長因子(vascular endothelial growth factor)
第二型血管新生素(angiopoietin 2)
乙型變形生長因子(transforming growth factor-β)
血小板來源生長因子(platelet-derived growth factor)
