Investigating the Prevalence of Mycobacterium Avium Subspecies Paratuberculosis (MAP) in Industrial Dairy herds using Ziehl-Neelsen Staining, Culture, and PCR in Mashhad, Iran Journal title: Iranian Journal of Veterinary Science and Technology (IJVST) Authors: Tahereh Gholamhosseini Moghaddam,Masoud Haghkhah,Gholam Reza Mohammadi, Subject(s): Veterinary Science