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PREVIOUS RECORDS The earliest record of urinary amoebiasis appears to be that of Baelz (1883), who described an amoeba found in the blood-stained urine and in the vagina of a patient in Japan. This organism, called Amoeba urogenitalis, measured from 23p. to 50p. in diameter, was actively motile, and extruded pseudopodia that were short and blunt. Its cytoplasm was granular in appearance, it was phagocytic for red blood corpuscles, and it possessed a vesicular nucleus.doi:10.1080/00034983.1916.11684114 fatcat:5muvonkzhjekracxxheeg6k2qm