Q. How do cells of neoplastic tumors obtain oxygen and nutrients and release wastes?
In the neoplastic tumors a phenomenon called as angiogenesis occurs. The Angiogenesis is the formation of new blood vessels. The Neoplastic cells induce the formation of new blood vessels to irrigate and drain the neoplastic tissue. The Angiogenesis is important because the tumor growth depends on it. Lots of research on cancer has tried to discover natural and synthetic substances to inhibit angiogenesis.