This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). The authors retract the above paper due to: 1) conflict of interest among the authors; and 2) addition of co-author Dr. Muhammad Younus without his knowledge or permission. The authors apologize for these two grave mistakes.
Keywords: Mycoplasma synoviae; avian influenza; immunity; layer; replication; vaccine.
Published by Oxford University Press on behalf of Poultry Science Association 2017.