Carcinoma, Lewis Lung/enzymology; Endothelial Growth Factors/metabolism; Intercellular Signaling Peptides and Proteins/metabolism; Lymphokines/metabolism; Neovascularization, Pathologic/enzymology; Prostaglandin-Endoperoxide Synthases/metabolism; Sarcoma 180/enzymology; Animals; Antibodies, Blocking/therapeutic use; Aspirin/pharmacology; Aspirin/therapeutic use; Benzenesulfonates/therapeutic use; Carcinoma, Lewis Lung/blood supply; Carcinoma, Lewis Lung/secondary; Cyclooxygenase Inhibitors/pharmacology; Cyclooxygenase Inhibitors/therapeutic use; Disease Models, Animal; Endothelial Growth Factors/genetics; Endothelial Growth Factors/immunology; Intercellular Signaling Peptides and Proteins/genetics; Intercellular Signaling Peptides and Proteins/immunology; Isoxazoles/therapeutic use; Lymphokines/genetics; Lymphokines/immunology; Male; Mice; Mice, Inbred C57BL; Neoplasm Transplantation; Neovascularization, Pathologic/drug therapy; Nitrobenzenes/pharmacology; Oxazoles/therapeutic use; Prostaglandin-Endoperoxide Synthases/genetics; RNA, Messenger/metabolism; Reverse Transcriptase Polymerase Chain Reaction; Sarcoma 180/blood supply; Sarcoma 180/pathology; Sulfonamides/pharmacology; Vascular Endothelial Growth Factor A; Vascular Endothelial Growth Factors