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Summary of the potential pathways about exogenous antigen 11S processing and presentation in the distal intestine. Letter P in a circle, phosphorylation; ↓, down-regulated; ↑, up-regulated; –, constant; →, through; –⊗→, not through; ···, might through. (A) GL group; (B) BH group; (C) GSH-SB group.
