List of Articles immune system Open Access Article Abstract Page Full-Text 1 - The Effect of Echinacea purpurea Extract on Performance, and Interleukin-2 Gene Expression in Broilers G. Akbari A. Zarei N. Eila https://doi.org/10.71798/ijas.2025.1203008 Open Access Article Abstract Page Full-Text 2 - The Effect of Using Different Zinc Sources on Performance, Blood Parameters, and Some Enzymes Related to the Immune System in Holstein Calves F. Mirzaei Aghjehgheshlagh M. Pirshalkohi B. Navidshad H. Abdi Benmar J. Seifdavati A. Mahdavi https://doi.org/10.71798/ijas.2025.1214884