Steadham, E M <br/><br/>
Production of a Mycobacterium avium ssp. paratuberculosis purified protein derivative (PPD) and evaluation of potency in guinea pigs.  [electronic resource] 

 -  Biologicals : journal of the International Association of Biological Standardization  Jun 2002 
 - 93-5 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>1045-1056 
<br/><br/><label>Standard No.: </label>10.1006/biol.2002.0321  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Bacterial Proteins--administration & dosage<br/>Guinea Pigs<br/>Hypersensitivity, Delayed<br/>Mycobacterium avium--immunology<br/>Paratuberculosis--diagnosis<br/>Skin--metabolism<br/>Time Factors<br/>Tuberculin--chemistry