| 摘要 |
<p>The invention relates to recombinant Infectious Bursal Disease Virus (IBDV) and vaccines derived thereof. The invention provides infectious recombinant Infectious Bursal Disease Virus (rIBDV) essentially incapable of growing in a cell that is not derived from a bursa cell, or an infectious rIBDV having retained at least part of the very virulent characteristics of a very virulent Infectious Bursal Disease Virus (vvIBDV).</p> |
