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        A photomicrograph of the histological changes caused by  Myxobolus cerebralis infection of  salmonid  cartilage, stained with  Giemsa. From the collected images of Dr. Thomas L. Wellborn, Jr.  License verifyed.
        
         
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          This image is in the  public domain because it contains materials that originally came from the U.S.  National Oceanic and Atmospheric Administration, taken or made as part of an employee's official duties. 
           
            
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