Experimental Colonic Tumours in the Rat

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Abstract
A method is described for demonstrating the mucosal appearance of the colon of the rat with double contrast and magnification radiography. The rats were examined at regular intervals. Double contrast examinations were performed 1 570 times in 418 rats. The animals were prepared by cleansing the colon with enemas. The mortality rate for different forms of anesthesia was recorded. An anesthesia with intraperitoneal administration of chloralhydrate and atropine-sulfate was the most appropriate.