http://www.flickr.com

/pho

tos/mnicolem/2244627703

Fever

http://www.flickr.com/photos/stevendepolo/3020361085

Vaccine

http://www.flickr.com/photos/kalsbeek/423568746/

Antibiotics

http://www.flickr.com/photos/insects12/3954845715

Malaria

http://www.flickr.com/photos/48714570@N08/5651286223/

Fungi

Infections

http://www.flickr.com

/pho

tos/jbtiv

/372

1064

969

Parasite

http://www.flickr.com

/pho

tos/jim

fischer/182

6056

29

Chicken pox

http://www.flickr.com

/pho

tos/pgautie

r/48

6197

031

Macrophage

http://www.flickr.com

/pho

tos/pu

lmon

ary_pathology/45

7471

1313

Antigen

http://www.flickr.com/photos/euthman/1814518377