ELMahdy, A.I., Sharawy, S.M., Mohamed, G.A., Medan, M.S. and ELsayed, D.H. 2023. Efficacy of Co-synch Protocol on Normal Cyclic Dairy Cows with or Without Corpora Lutea. Journal of Advanced Veterinary Research. 13, 10 (Dec. 2023), 2034-2038.