Five-week-old male BALB/c mice were purchased from SLC Japan (Shizuoka, Japan). The animals were maintained in a pathogen-free animal facility under a 12 h light/dark cycle in a temperature (22 )- and humidity-controlled environment, in accordance with the institutional guidelines approved by the Committee for Animal Experimentation of Nara Medical University, Kashihara, Japan, following the current regulations and standards of the Japanese Ministry of Health, Labor and Welfare (approval no. 12924, 5 November 2020). Animals were acclimated to their housing for seven days before the start of the experiment. For the peritoneal dissemination tumor model, CT26 cancer cells (1 x 10⁷ in 0.2 mL per mouse) were injected into the mouse peritoneal cavity. To measure tumor weight, mice were euthanized on Day 12 and the tumors were excised, while the peritoneal tumors were dissected from the intestine, mesenterium, diaphragm, and abdominal wall, with gross removal of non-tumor tissues. The largest tumor was formed on the diaphragm, and paraffin-embedded sections of the excised diaphragmatic tumor were prepared and stained with hematoxylin-eosin. BBR was diluted with distilled water to produce a final concentration of 48 mg/mL. The solutions were ultrasonically treated for 1 h, and fully vortexed for 30 min. BBR solution was administered by free drinking. The intake calculated from the amount of water consumed was 15.2 mg/kg body weight/day.

Five-week-old male BALB/c mice were purchased from SLC Japan (Shizuoka, Japan). The animals were maintained in a pathogen-free animal facility under a 12 h light/dark cycle in a temperature (22 )- and humidity-controlled environment, in accordance with the institutional guidelines approved by the Committee for Animal Experimentation of Nara Medical University, Kashihara, Japan, following the current regulations and standards of the Japanese Ministry of Health, Labor and Welfare (approval no. 12924, 5 November 2020). Animals were acclimated to their housing for seven days before the start of the experiment. For the peritoneal dissemination tumor model, CT26 cancer cells (1 x 10⁷ in 0.2 mL per mouse) were injected into the mouse peritoneal cavity. To measure tumor weight, mice were euthanized on Day 12 and the tumors were excised, while the peritoneal tumors were dissected from the intestine, mesenterium, diaphragm, and abdominal wall, with gross removal of non-tumor tissues. The largest tumor was formed on the diaphragm, and paraffin-embedded sections of the excised diaphragmatic tumor were prepared and stained with hematoxylin-eosin. BBR was diluted with distilled water to produce a final concentration of 48 mg/mL. The solutions were ultrasonically treated for 1 h, and fully vortexed for 30 min. BBR solution was administered by free drinking. The intake calculated from the amount of water consumed was 15.2 mg/kg body weight/day.

Five-week-old male BALB/c mice were purchased from SLC Japan (Shizuoka, Japan). The animals were maintained in a pathogen-free animal facility under a 12 h light/dark cycle in a temperature (22 )- and humidity-controlled environment, in accordance with the institutional guidelines approved by the Committee for Animal Experimentation of Nara Medical University, Kashihara, Japan, following the current regulations and standards of the Japanese Ministry of Health, Labor and Welfare (approval no. 12924, 5 November 2020). Animals were acclimated to their housing for seven days before the start of the experiment. For the peritoneal dissemination tumor model, CT26 cancer cells (1 x 10⁷ in 0.2 mL per mouse) were injected into the mouse peritoneal cavity. To measure tumor weight, mice were euthanized on Day 12 and the tumors were excised, while the peritoneal tumors were dissected from the intestine, mesenterium, diaphragm, and abdominal wall, with gross removal of non-tumor tissues. The largest tumor was formed on the diaphragm, and paraffin-embedded sections of the excised diaphragmatic tumor were prepared and stained with hematoxylin-eosin. BBR was diluted with distilled water to produce a final concentration of 48 mg/mL. The solutions were ultrasonically treated for 1 h, and fully vortexed for 30 min. BBR solution was administered by free drinking. The intake calculated from the amount of water consumed was 15.2 mg/kg body weight/day.