What is the primary purpose of adding 'Lugol's Iodine' to a wet mount of stool during microscopic examination?
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Correct answer: To highlight internal structures of protozoan cysts
Iodine is a vital stain for protozoan cysts, highlighting the number and arrangement of nuclei and the presence of glycogen vacuoles. While it stains cysts clearly, it unfortunately kills motile trophozoites, necessitating a saline mount for motility assessment.
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