Topic 2: Infectious disease and epidemiology

1. White blood cells that rapidly engulf and destroy pathogens.
4. Single-celled prokaryotic microorganisms that can reproduce independently.
5. Localised immune response involving redness, swelling, heat and pain.
8. Immune cells that engulf pathogens and present antigens to other immune cells.
10. Immune cells that destroy infected cells in the cell-mediated immune response.
11. Eukaryotic organisms such as yeasts and moulds that can cause infections.
13. Immunity gained by receiving antibodies from another source such as maternal antibodies or injections.
14. Protective outer layer of some bacteria that helps them evade the immune system.
15. Long-lived immune cells that enable a faster response upon re-exposure to a pathogen.
17. Disease caused by pathogens that can be transmitted between organisms.
19. Proteins produced by B lymphocytes that specifically bind to antigens.

2. Single-celled eukaryotic organisms that may act as pathogens.
3. Infectious proteins that cause disease by inducing abnormal protein folding.
6. Disease not caused by pathogens and not spread between individuals.
7. Process by which a disease develops in the body.
9. Immunity produced when the body generates its own antibodies after exposure to an antigen.
12. Microscopic infectious agent that replicates only inside a host cell.
16. Poisonous substances produced by pathogens that damage host tissues.
18. Organism that lives on or inside a host and obtains nutrients at the host’s expense.
20. Immune cells responsible for producing antibodies in the humoral response.