The invention is related to administration of monoclonal antibody JAA-F11 to an individual for inhibition of metastasis and/or inhibition of growth of cells which express TF-Ag, or for detection of tumors or metastatic foci which express TF-Ag. For inhibition of metastasis or inhibition of growth of cells expressing TF-Ag, the method comprises administering to the individual a therapeutic amount of mAb JAA-F11, wherein the JAA-F11 mAb inhibits the metastasis and/or growth of the TF-Ag expressing cancer cells. For detection of tumors or metastatic foci, mAb JAA-F11 is conjugated to a detectable label and administered to the individual. Detection of the label identifies metastatic foci or tumors which comprise cancer cells expressing TF-Ag.
