<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>A radioactive phosphate salt that distributes readily into intra and extracellular compartments and accumulates in rapidly dividing cancer cells leading to cell death. (NCI)</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>