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    Illustration of female silhouette with highlighted intestines. — Stock Photo
    Illustration of female silhouette with highlighted intestines.
    3d anatomical model showing internal organs in female anatomy, computer illustration. — Stock Photo
    3d anatomical model showing internal organs in female anatomy, computer illustration.
    Medical illustration of bacteria in human intestine. — Stock Photo
    Medical illustration of bacteria in human intestine.
    Diseased gallbladder in abstract human body, conceptual digital illustration. — Stock Photo
    Diseased gallbladder in abstract human body, conceptual digital illustration.
    Cryptosporidium parvum parasite in human body causing cryptosporidiosis, digital illustration. — Stock Photo
    Cryptosporidium parvum parasite in human body causing cryptosporidiosis, digital illustration.
    Transparent body model showing male anatomy and internal organs, digital illustration. — Stock Photo
    Transparent body model showing male anatomy and internal organs, digital illustration.
    Diverticulitis of large intestine, computer illustration. — Stock Photo
    Diverticulitis of large intestine, computer illustration.
    Visible gallbladder in male body 3d model, computer illustration. — Stock Photo
    Visible gallbladder in male body 3d model, computer illustration.
    Male silhouette with visible small intestine, digital illustration. — Stock Photo
    Male silhouette with visible small intestine, digital illustration.
    Healthy large intestines — Stock Photo
    Healthy large intestines
    Transparent body model showing male anatomy and internal organs, digital illustration. — Stock Photo
    Transparent body model showing male anatomy and internal organs, digital illustration.
    Female upper body anatomy and internal organs, computer illustration. — Stock Photo
    Female upper body anatomy and internal organs, computer illustration.
    3d anatomical model demonstrating female anatomy and internal organs in front view, computer illustration. — Stock Photo
    3d anatomical model demonstrating female anatomy and internal organs in front view, computer illustration.
    Illustration of blue silhouette of obese woman with highlighted colon. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted colon.
    Anatomical male body with colored large intestine, computer illustration. — Stock Photo
    Anatomical male body with colored large intestine, computer illustration.
    Mid section illustration of small intestine in male body silhouette. — Stock Photo
    Mid section illustration of small intestine in male body silhouette.
    Human intestine and close-up of Campylobacter jejuni bacteria causing Campylobacteriosis, conceptual illustration. — Stock Photo
    Human intestine and close-up of Campylobacter jejuni bacteria causing Campylobacteriosis, conceptual illustration.
    Illustration of transparent blue silhouette of male body with colored colon. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored colon.
    Human tapeworm infection, illustration — Stock Photo
    Human tapeworm infection, illustration
    Small intestine wall — Stock Photo
    Small intestine wall
    Internal organs and pelvic girdle — Stock Photo
    Internal organs and pelvic girdle
    Female silhouette with visible small intestine, digital illustration. — Stock Photo
    Female silhouette with visible small intestine, digital illustration.
    Illustration of senior man silhouette with visible digestive system. — Stock Photo
    Illustration of senior man silhouette with visible digestive system.
    Illustration of colon in transparent male silhouette. — Stock Photo
    Illustration of colon in transparent male silhouette.
    Low angle rear view of human silhouette showing male anatomy, digital illustration. — Stock Photo
    Low angle rear view of human silhouette showing male anatomy, digital illustration.
    Illustration of digestive system in transparent male silhouette. — Stock Photo
    Illustration of digestive system in transparent male silhouette.
    Human large intestine — Stock Photo
    Human large intestine
    Lining of the small intestine — Stock Photo
    Lining of the small intestine
    Illustration of small intestine in transparent male silhouette. — Stock Photo
    Illustration of small intestine in transparent male silhouette.
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract. — Stock Photo
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract.
    Villi from the lining of the jejunum — Stock Photo
    Villi from the lining of the jejunum
    Illustration of thorax anatomy in transparent male silhouette. — Stock Photo
    Illustration of thorax anatomy in transparent male silhouette.
    Female body with diseased colon, digital illustration. — Stock Photo
    Female body with diseased colon, digital illustration.
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible. — Stock Photo
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible.
    Male silhouette with visible small intestine, digital illustration. — Stock Photo
    Male silhouette with visible small intestine, digital illustration.
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital illustration. — Stock Photo
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital illustration.
    Male abdominal organs, midsection, digital illustration. — Stock Photo
    Male abdominal organs, midsection, digital illustration.
    Anatomical illustration of male body silhouette with visible organs on white background. — Stock Photo
    Anatomical illustration of male body silhouette with visible organs on white background.
    Computer illustration of giardiasis, an infection in the small intestine caused by the parasite giardia lamblia — Stock Photo
    Computer illustration of giardiasis, an infection in the small intestine caused by the parasite giardia lamblia
    Illustration of small intestine in human body silhouette. — Stock Photo
    Illustration of small intestine in human body silhouette.
    Egg of a parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Egg of a parasitic worm Trichuris trichiura, computer illustration
    Giardia lamblia single-celled protozoan parasites in human duodenum, digital artwork. — Stock Photo
    Giardia lamblia single-celled protozoan parasites in human duodenum, digital artwork.
    Transparent body model showing male anatomy and internal organs, digital illustration. — Stock Photo
    Transparent body model showing male anatomy and internal organs, digital illustration.
    Human digestive system microbiota, 3d illustration. — Stock Photo
    Human digestive system microbiota, 3d illustration.
    Dog roundworm parasite — Stock Photo
    Dog roundworm parasite
    Realistic body model showing female anatomy on blue background, computer illustration. — Stock Photo
    Realistic body model showing female anatomy on blue background, computer illustration.
    Low angle rear view of human silhouette showing male anatomy, digital illustration. — Stock Photo
    Low angle rear view of human silhouette showing male anatomy, digital illustration.
    Gallbladder in abstract female body on blue background, computer illustration. — Stock Photo
    Gallbladder in abstract female body on blue background, computer illustration.
    Internal organs and digestive system — Stock Photo
    Internal organs and digestive system
    Illustration of transparent blue silhouette of male body with colored small intestine. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored small intestine.
    Large intestine showing diverticulitis — Stock Photo
    Large intestine showing diverticulitis
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital illustration. — Stock Photo
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital illustration.
    Gallbladder in abstract female body on blue background, computer illustration. — Stock Photo
    Gallbladder in abstract female body on blue background, computer illustration.
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species — Stock Photo
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species
    Diseased small intestine in female body transparent silhouette on black background, digital illustration. — Stock Photo
    Diseased small intestine in female body transparent silhouette on black background, digital illustration.
    Human body anatomy showing respiratory and digestive systems, digital illustration. — Stock Photo
    Human body anatomy showing respiratory and digestive systems, digital illustration.
    Illustration of human colon in body silhouette. — Stock Photo
    Illustration of human colon in body silhouette.
    Internal organs and digestive system — Stock Photo
    Internal organs and digestive system
    Diseased gallbladder in transparent female body model, conceptual illustration. — Stock Photo
    Diseased gallbladder in transparent female body model, conceptual illustration.
    Computer illustration showing a female torso with the internal organs and skeleton, side view. — Stock Photo
    Computer illustration showing a female torso with the internal organs and skeleton, side view.