... or parasite called Strongylus Micrurus, a small thread-like worm two to four inches in length, found in the bronchial tubes, a portion of the lungs. The life history of this parasite is not known, but infection is apparently derived through the medium of pastures where infested cattle have grazed. Young cattle are more seriously affected ... — The Veterinarian • Chas. J. Korinek
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