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ELISA coproantigen values for raccoons inoculated with eggs (top) or larvae (bottom). Black lines indicate animals in the high-dose groups (5000 eggs or 1000 L3 larvae) and grey lines in the low-dose groups (500 eggs or 250 L3 larvae). Horizontal line indicates positive cutoff value (OD650 ⩾ 0.100); the maximum assay value is OD650 = 4.000. Treatment occurred on 153 DPI for all raccoons in A, 114 DPI for RL-2 and RL-3, and 92 DPI for RL-4 and RL-5.
