partially purified extracts from 71 human urothelial tumors and 75 human urothelial nontumor tissues were used as competing antigens in competition radioimmunoassay in an effort to detect the presence of one of the structural components of type-c ribonucleic acid viruses , the p30 core protein .
C1519840
urothelial tumors
C0227598
urothelial