FIG. 3.

Intermediate dietary iron restriction increases the pathogenicity of primary hookworm infection. Animals were equilibrated on diets containing intermediate levels of iron (10, 40, 100, or 200 ppm) prior to infection with A. ceylanicum. Shown are data from measurements of percentages of the change in weight relative to weight on day 0 (A), blood hemoglobin concentration (B), and serum iron concentration (C) taken on day 22 postinfection. P values for statistically significant differences are shown above brackets.