MSD Manual

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Mycoplasma bovis, chronic pneumonia and arthritis, calf
chronic-pneumonia-arthritis-calf-campbell-sized
Mycoplasma bovis, chronic pneumonia and arthritis, calf

    Photograph of a steer affected with Mycoplasma bovis infection, resulting in polyarthritis and chronic pneumonia. Note the swollen carpi and tarsi and the abnormal stance.

Courtesy of Dr. John Campbell.