Fig. 4. Colonization in tumor models and different modes of administration. Colonization in tumor models and different modes of administration. (A) IVIS images showing colonization of subcutaneous human (LS174T-LucF, TOV21G) or mouse (MC26, KBP22, 393M1-LucF) tumors by 5 × 106 CFU PROP-Z, 1 to 3 days after intravenous administration to immunocompetent mice. (B) Colonization was determined by observing flank luminescence from bacteria 1 to 3 days after bacteria administration using IVIS and is expressed as % tumors colonized. n = 6 tumors per cell line. (C) IVIS images of mice (MC26-LucF:Balb/c) intravenously injected with 104 or 5 × 106 CFU PROP-Z or administered with 5 × 109 CFU PROP-Z via oral gavage. (D) Colonization determined in two models upon oral (5 × 109) or intravenous (104 to 5 × 106) injection of PROP-Z and expressed as % colonized. n = 6 tumors per dosage. Tal Danino et al., Sci Transl Med 2015;7:289ra84 Copyright © 2015, American Association for the Advancement of Science