Panels A and B: Established tumor (V = 146 mm3) 28 days after subcutaneous injection of COLO320 and SW403 cells respectively into left flanks of NU/J Foxn1nu mice (H2d). For advanced tumors it was possible to measure W and L using a ruler. A caliper was used for regressing tumors (e.g. panel C, 30 days after intravenous CEA T body treatment; pre- and post -treatment. RTV C vs. B = 0.43).