A large roundworm (_Ascaris vitulorum_) measuring 6 to 12 inches in length, sometimes found in the intestines of cattle, especially calves, may cause inflammation and occasionally rupture of the intestine. [Please select]
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One species of small roundworm (_Cooperia punctata_) burrows in the wall of the small intestine and causes caseous nodules in the mucous lining. [Please select]
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