Circulation & Immunity Crossword Puzzle

QUESTIONS LIST: pasteurization : process in which a liquid is heated to a temperature that kills most bacteria, tissue : a group of similar cells that work together to do one job, allergen : substance that causes an allergic reaction, antigen : complex molecule that is foreign to your body, capillary : blood vessel that connects arteries and veins, active immunity : long-lasting immunity that results when the body makes its own antibodies in response to a specific antigen, plasma : the liquid part of blood, which is made mostly of water, hemoglobin : a molecule in red blood cells that carries oxygen and carbon dioxide, enzyme : a type of protein that regulates chemical reactions in cells without being changed or used up itself, infectious : disease caused by a virus, bacterium, fungus, or protest that is spread from one person to another, artery : blood vessel that carries blood away from the heart, vein : blood vessel that carries blood to the heart, antibody : a protein made in response to a specific antigen that can attach to the antigen and cause it to be useless, virus : a strand of hereditary material surrounded by a protein coating, platelet : irregular shaped cell fragments that help clot blood, lymph : fluid that has diffused into the lymphatic capillaries