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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The most distinctive feature of pathogenic E. histolytica on fresh stool examination is:
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The correct answer is  The trophozoites from acute dysentric stools often contain phagocytosed erythrocytes. This feature is diagnostic and distinctive as phagocytosed red cells are not found in any other commensal intestinal amoebae.