DAS SC, RAM GC, VERMA KC, KATARIA JM. Concentration and purification of infectious bursal disease virus (IBDV) by sucrose density gradient centrifugation. Indian J of Anim Sci. 2013;67(8). Accessed October 24, 2025. https://epubs.icar.org.in/index.php/IJAnS/article/view/34869