Cardoso, Tereza C., Maria C. B. Teixeira, Natali Fachin, Tatiani L. Camargo, Deriane E. Gomes, Anivaldo O. Corte Junior, and Beatriz Anselmo. 2005. “Evaluation of Serum- and Animal Protein-Free Media for the Production of Infectious Bronchitis Virus (M41) Strain in a Continuous Cell Line”. ALTEX - Alternatives to Animal Experimentation 22 (3):152-56. https://altex.org/index.php/altex/article/view/891.