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The granulomatous area in the liver of the mice that were previously infected with the S. mansoni BH strain and then inoculated 8 weeks later with eggs from the S. mansoni BH (Group III) or SJ (Group IV) strains. The mice were euthanized 1, 8, 15, or 34 days after inoculation with the eggs. At each time point, the means depicted with the same letter do not differ significantly (α = 0.05).
