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|  | The Anatomical Therapeutic Chemical (ATC) classification system |  | 
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 Level 5
 
 B - Blood and blood forming organsB05 - Blood substitutes and perfusion solutionsB05X - I.V. solution additivesB05XA - Electrolyte solutionsB05XA13 - Hydrochloric Acid
 
 Hydrochloric Acid
 
 
 
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