1. If the reovirus is human reovirus, serotype 1 (e.g., strain Lang), serotype 2 (e.g., strain Jones), serotype 3 (e.g., strain Dearing or strain Abney), as well as other serotypes or strains of reovirus can be used.

2. Reovirus is an adventitious agent that should not be present at any step in the production of Abbokinase.

3. Attenuated Apathogenic reovirus vaccine for use in chickens at an early age to protect them against infection with field virus

4. The present invention relates to novel strains of avian reovirus that were isolated from clinical cases of viral arthritis/tenosynovitis in chickens in the southeast United States.

5. Examples of viruses which can be propagated are avian laryngotracheitis (ILT) virus, a reovirus/tenosynovitis virus, infectious bursal disease virus, avian pox virus, and a Newcastle disease virus.