1. http://www.flickr.com/photos/boobook48/3099306415
Fungi

2. http://www.flickr.com/photos/mr_d_logan/5039
1390
Virus

3. Antigen
http://www.flickr.com/photos/ajc1/3409509048

4. Macrophage
http://www.flickr.com/photos/nottinghamvets/5828221893

5. http://www.flickr.com/photos/sparktography/389825661
Antibiotics

6. Malaria
http://www.flickr.com/photos/krayker/2126649185

7. Parasite
http://www.flickr.com/photos/sanmartin/504810340

8. Vaccine
http://www.flickr.com/photos/andresrueda/2983149263

9. http://www.flickr.com/photos/xav/3678466365
Contagious

10. http://www.flickr.com/photos/cambodiatrust/2564
543043
Polio