Fig. 3From: Intratumor microbiome in cancer progression: current developments, challenges and future trendsThe potential source of intratumor microbiota. A. Microbiome may translocate from intestine to the tumor sites, which depends on blood circulation and ducts translocation. B. Oral microbiome may be another origin of intratumor microbiota. And blood circulation and digestive system are the main pathwaysBack to article page