Topic 5 So Far...

2. The drug given as part of a clinic trial to rule out psychological effects and acts as a control
6. The protein present on the surface of pathogens
9. The protein produced by B-lymphocytes
10. A cell involved in the non-specific immune response
11. The viral replication method can take hours/days to take place
13. Diseases caused by pathogens
14. A description of the form of pathogen present inside vaccines
15. Herd Immunity reduces the _______ of a pathogen
16. A physical plant defence
18. The physical barrier helping to trap dust and pathogens
19. The disease caused by the plasmodium protist
20. Organism carrying pathogen from host to host

1. A chemical produced by bacteria to cause harm to cells
3. These move mucus out of the body or down to the stomach
4. The type of cell which allows for a greater secondary response to a pathogen
5. Another protein produced by B-lymphocytes which can neutralise a bacterial product
7. A chemical defence produced by plants
8. The word we can use to describe the relationship between antibodies and antigens
9. A reason why a child may not receive a vaccine
12. The part of the pathogen which is injected into the host cell during the lytic cycle
17. The enzyme present in phagocytes