Antibodies, Blocking/therapeutic use; Antineoplastic Agents/pharmacology; Carcinoma, Hepatocellular/drug therapy; Colonic Neoplasms/drug therapy; Fibroblast Growth Factors/antagonists & inhibitors; Gene Targeting/methods; Liver Neoplasms, Experimental/drug therapy; Xenograft Model Antitumor Assays/methods; Animals; Antibodies, Monoclonal/therapeutic use; Carcinoma, Hepatocellular/genetics; Carcinoma, Hepatocellular/immunology; Carcinoma, Squamous Cell/drug therapy; Carcinoma, Squamous Cell/immunology; Carcinoma, Squamous Cell/metabolism; Colonic Neoplasms/genetics; Colonic Neoplasms/immunology; Fibroblast Growth Factors/biosynthesis; Fibroblast Growth Factors/genetics; Fibroblast Growth Factors/immunology; HCT116 Cells; HT29 Cells; Humans; Liver Neoplasms, Experimental/immunology; Lung Neoplasms/drug therapy; Lung Neoplasms/genetics; Lung Neoplasms/immunology; Mice; Mice, Inbred BALB C; Mice, Nude; Mice, Transgenic; Neoplasm Transplantation; Receptor, Fibroblast Growth Factor, Type 4/biosynthesis; Receptor, Fibroblast Growth Factor, Type 4/genetics; Receptor, Fibroblast Growth Factor, Type 4/metabolism; Transplantation, Heterologous