<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>A virus that is being studied in the treatment of cancer. It belongs to the family of viruses that cause Newcastle disease in birds.</n0:def-definition><n0:def-source>NCI-GLOSS</n0:def-source></n0:ComplexDefinition>
<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>An attenuated, replication-competent, oncolytic strain of Newcastle disease virus. PV701 selectively lyses tumor cells. The selectivity of this agent is related to defects in the interferon-mediated antiviral response found in tumor cells. (NCI04)</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>