How does our immune system protect us from cancer?
A. It recognizes and destroys abnormal cells, which differ from normal cells.
B. Lymphocytes block lymphatic channels so that tumor cells cannot metastasize through the lymphatics.
C. Proliferation of T lymphocytes declines in response to tumor growth.
D. It destroys viruses that promote tumor growth.
Question 2
The major extracellular anions are:
A. phosphate and carbonate.
B. bicarbonate and chloride.
C. bicarbonate and phosphate.
D. lactate and chloride.