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Kinetics of intestinal permeability during primary T. spiralis infection. Permeability of jejunum sections to mannitol was measured on days (d) 0, 7, 10, and 21 postinfection; *, P < 0.003 d0 vs. d10, Λ, P < 0.003 d10 vs. d21 (a). Parasite numbers in the jejunum were counted on days 6 and 10 postinfection, *, P < 0.005 (b).
