Biology

5. a person who does not eat meat or fish, and sometimes other animal products
7. a substance that our body identifies as foreign
12. cancer of the white blood cells
14. a disease that has spread across a geographical area, affecting many people in a short amount of time
15. a microorganism that causes a disease
16. organisms that live on or in a host, they include protozoa and worms, which cause many parasitic diseases
17. proteins on the surface of B lymphocytes, that act as receptors and identify antigens
18. our body's ability to combat pathogens and foreign substances or tissues
19. the person or animal that provides the organ, tissues or cells that are transplanted
20. the United Nations agency that connects nations, partners and people to promote health
21. organisms, usually humans or animals, which are exposed to and carry the disease
22. the kinds of food that a person, or community usually eats
23. destroys bacteria or prevents their growth, some are manufactured synthetically in laboratories, and others are made by microorganisms

1. white blood cells which envelop and absorb the pathogen into their cytoplasm
2. the proteins, fats, carbohydrates, vitamins, or minerals contained in food
3. prokaryotic unicellular organisms that invade cells or release substances (toxins) that are very harmful to humans
4. eukaryotic unicellular or multicellular organisms, some grow on the skin, nails or hair
6. when other substances have been added to the drugs to obtain larger profits
8. taking living tissue or an organ and implanting it in another body
9. abnormal proteins that damage and destroy nerve tissue cells
10. the person who receives the transplant
11. an epidemic that has spread to different countries on different continents
13. medications used for fevers