Fig. 2

Representative images depicting four patterns of xenograft models at day 14. Macroscopic views of peritoneal nodules (arrow head). a control group. b co-cultured group. Peritoneal nodules are present on the surfaces of the abdominal organs, but organ invasion is not present. c, d parietal group. Tumors are present on the scratched peritoneal portion (Dotted line). e–g visceral group. Tumors forming a block with invaded intestinal tract and peritoneum