1. Virus
http://www.flickr.com/photos/ajc1/1257163357/

2. Bacteria
http://www.flickr.com/photos/darrowassoc/3914916754/sizes/m/in/photostream/

3. Exothermic
http://www.flickr.com/photos/exothermic/2546338537/sizes/o/in/photostream
/

4. Blood cell
http://www.flickr.com/photos/jonmcgovern/3069817485/sizes/z/in/photostream/

5. Vaccine
http://www.flickr.com/photos/andresrueda/2983149263/sizes/l/in/photostream/

6. Small pox
http://www.flickr.com/photos/ideonexus/4698406410/lightbox

7. Polio
http://www.flickr.com/photos/7230543@N03/846590780/

8. Fungi
http://www.flickr.com/photos/84265607@N00/363304008/

9. T-Cell
http://www.flickr.com/photos/microbeworld/6055678631/sizes/m/in/photostream/

10. Infection
http://www.flickr.com/photos/patrickwilken/3444550964/sizes/l/in/photostream/