Question 1
The usual, naturally-occurring mechanism that prevents development of cancer is the action of
◦ cytotoxic T cells.
◦ oncogenes.
◦ radiation.
◦ chemotherapy.
◦ carcinogens.
Question 2
Under the microscope, cancerous tumors
◦ display well-differentiated cells.
◦ have ragged edges.
◦ appear highly organized.
◦ are of normal cell size and appearance.
◦ have very little vascular supply.