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Graphical representation of weight loss among S. flexneri injected control mice. L means marked on the left ear; R means marked on the right ear, and 0–3, is the number of markings; (eight mice used in each group). (i) each line of the graph represent the percent of weight loss of non-vaccinated control mice after challenge given; (ii) incomplete lines represent the death of mice due to challenge by Shigella.
