The importance of fieldwork in biology.
D000820:Animal Diseases / Q000209:etiology; D000818:Animals; D001404:Babesiosis / Q000209:etiology; D001695:Biology; D003141:Communicable Diseases / Q000635:transmission; D006801:Humans; D008288:Malaria / Q000209:etiology; D010272:Parasitic Diseases / Q000209:etiology / Q000635:transmission*; D012107:Research Design; D014330:Tropical Medicine