Microscopy of blood films for parasites in the field.
D001769:Blood / Q000469:parasitology*; D001899:Borrelia Infections / Q000175:diagnosis; D003937:Diagnosis, Differential; D006652:Histological Techniques / Q000295:instrumentation; D006801:Humans; D008288:Malaria / Q000175:diagnosis; D010272:Parasitic Diseases / Q000175:diagnosis*