File:"The Dunn Urine Test Case" 1894 ad in The Pulse - Rush Medical College yearbook (IA pulserushmedical1894rush) (page 283 crop).jpg
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![File:"The Dunn Urine Test Case" 1894 ad in The Pulse - Rush Medical College yearbook (IA pulserushmedical1894rush) (page 283 crop).jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/52/%22The_Dunn_Urine_Test_Case%22_1894_ad_in_The_Pulse_-_Rush_Medical_College_yearbook_%28IA_pulserushmedical1894rush%29_%28page_283_crop%29.jpg/450px-%22The_Dunn_Urine_Test_Case%22_1894_ad_in_The_Pulse_-_Rush_Medical_College_yearbook_%28IA_pulserushmedical1894rush%29_%28page_283_crop%29.jpg?20211026041320)
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