<n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>Sargramostim Plasmid DNA Sarcoma Vaccine</n0:term-name><n0:term-group>PT</n0:term-group><n0:term-source>NCI</n0:term-source></n0:ComplexTerm><n0:ComplexTerm xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:term-name>GM-CSF plasmid DNA sarcoma vaccine</n0:term-name><n0:term-group>SY</n0:term-group><n0:term-source>NCI</n0:term-source></n0:ComplexTerm>
nci:P97
<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>An autologous sarcoma cell vaccine with potential immunostimulatory activity. Tumor cells harvested from a patient with sarcoma are transfected with a plasmid DNA encoding for human sargramostim (GM-CSF) using a particle-mediated gene transfer (PMGT) technique, which avoids the use of infectious components. Vaccination with an autologous sargramostim sarcoma vaccine produces high levels of GM-CSF, a cytokine that enhances antigen presentation by activated macrophages and increases the recognition of weakly immunogenic tumors by cytotoxic T-lymphocytes.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>