selection and some tumor cell characteristics of lung- , brain- , and ovary-colonizing metastatic b16 melanoma , liver-colonizing raw114 lymphosarcoma , and lung-colonizing msv3t3 vasoformative sarcoma variant lines will be discussed along with additional data , suggesting that tumor cells of varying malignant potential preeexist in the unselected tumor population .
C1112746
liver
C0334227
tumor cells