This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': 'All of the following factor stimulate angiogenesis in a fetus Except: \nSelect and explain. \nA. Vascular Endothelial Growth Factor (VEGF), B. Basic Fibroblast Growth Factor (bFGF), C. Interleukin - 8 (IL8), D. Interferon Alpha (INFa)', 'role': 'user'}, {'content': "Answer: D \nExplanation: D i.e. Interferon Alpha (INFa) 'Ocular Angiogenesis' by Tombran - Tink and Barnstable (2006)/297; Lasers in Ophthalmology (2003)/ 2251 Interferon alpha is an anti- angiogenic' agent that suppresses angiogenesis. 'Interferon alpha is an anti- angiogenic agent. Interferon alpha 2a causes dramatic involution of hemangiomas and inhibits iris neovascularization in models of ischemic retinopathy'.", 'role': 'assistant'}]