L. Cortés Machado and S. Villamarín Jurado, “Morphometric Characteristics of Lymphoid Organs and Serological Studies in Egg-Laying Birds Using an Immunomodulator, Vitamins and Amino Acids”, Spei domus, vol. 9, no. 18, Jun. 2013, doi: 10.16925/sp.v9i18.544.