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    Giardia lamblia flagellated protozoan parasite, digital illustration. — Stock Photo
    Giardia lamblia flagellated protozoan parasite, digital illustration.
    Illustration of transparent gray silhouette of male body with colored small intestine. — Stock Photo
    Illustration of transparent gray silhouette of male body with colored small intestine.
    Digital illustration of blastocystis hominis parasites, causative agents of diarrheal infection. — Stock Photo
    Digital illustration of blastocystis hominis parasites, causative agents of diarrheal infection.
    Male silhouette with visible small intestine, digital illustration. — Stock Photo
    Male silhouette with visible small intestine, digital illustration.
    Male silhouette with visible small intestine, digital illustration. — Stock Photo
    Male silhouette with visible small intestine, digital illustration.
    E. coli bacteria, illustration. Escherichia coli is a rod-shaped bacterium (bacillus). Its cell membrane is covered in fine filaments called pili or fimbriae — Stock Photo
    E. coli bacteria, illustration. Escherichia coli is a rod-shaped bacterium (bacillus). Its cell membrane is covered in fine filaments called pili or fimbriae
    Male anatomy with orange colored large intestine, digital illustration. — Stock Photo
    Male anatomy with orange colored large intestine, digital illustration.
    Group of cysts of Giardia intestinalis protozoans flagellated parasites in small intestine, digital illustration. — Stock Photo
    Group of cysts of Giardia intestinalis protozoans flagellated parasites in small intestine, digital illustration.
    Illustration of silhouette of obese man with highlighted colon tumor. — Stock Photo
    Illustration of silhouette of obese man with highlighted colon tumor.
    Low angle view illustration of blue silhouette of obese woman with highlighted small intestine. — Stock Photo
    Low angle view illustration of blue silhouette of obese woman with highlighted small intestine.
    3d illustration of intestinal finger-like villi projections extending in lumen of small intestine — Stock Photo
    3d illustration of intestinal finger-like villi projections extending in lumen of small intestine
    Medical artwork showing intestinal villi in bowel. — Stock Photo
    Medical artwork showing intestinal villi in bowel.
    Illustration of small intestine in transparent male silhouette. — Stock Photo
    Illustration of small intestine in transparent male silhouette.
    Red colored probiotic rod-shaped gram-positive aerobic Bacillus clausii bacteria restoring microflora of intestine. — Stock Photo
    Red colored probiotic rod-shaped gram-positive aerobic Bacillus clausii bacteria restoring microflora of intestine.
    Bowel cancer in female body, conceptual computer illustration. — Stock Photo
    Bowel cancer in female body, conceptual 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
    Villi of the intestine — Stock Photo
    Villi of the intestine
    Male silhouette with visible small intestine, digital illustration. — Stock Photo
    Male silhouette with visible small intestine, digital illustration.
    3d illustration of a Salmonella sp. bacterium approaching human cell — Stock Photo
    3d illustration of a Salmonella sp. bacterium approaching human cell
    Enterobius vermicularis threadworm eggs containing worm larvae, causative agent of enterobiasis, computer illustration. — Stock Photo
    Enterobius vermicularis threadworm eggs containing worm larvae, causative agent of enterobiasis, computer illustration.
    Illustration of female silhouette with highlighted small intestine. — Stock Photo
    Illustration of female silhouette with highlighted small intestine.
    Abstract male figure showing colored large intestine, computer illustration. — Stock Photo
    Abstract male figure showing colored large intestine, computer illustration.
    Group of Trichomonas hominis protozoan parasites, digital illustration. — Stock Photo
    Group of Trichomonas hominis protozoan parasites, digital illustration.
    Illustration of figure of obese man with visible colon. — Stock Photo
    Illustration of figure of obese man with visible colon.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Digital illustration of yeast and hyphae stages of Candida albicans fungus. — Stock Photo
    Digital illustration of yeast and hyphae stages of Candida albicans fungus.
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut — Stock Photo
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut
    Female abdominal organs, midsection, digital illustration. — Stock Photo
    Female abdominal organs, midsection, digital illustration.
    Small intestine and bowel cancer in female body, conceptual computer illustration. — Stock Photo
    Small intestine and bowel cancer in female body, conceptual computer illustration.
    Giardia intestinalis, trophozoite and cyst, flagellated parasite in small intestine, digital illustration. — Stock Photo
    Giardia intestinalis, trophozoite and cyst, flagellated parasite in small intestine, digital illustration.
    Illustration of visible colon in human body. — Stock Photo
    Illustration of visible colon in human body.
    3d rendered illustration of colored female small intestine in body silhouette. — Stock Photo
    3d rendered illustration of colored female small intestine in body silhouette.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Illustration of transparent blue silhouette of male body with colored digestive system. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored digestive system.
    Female silhouette with visible large intestine, digital illustration. — Stock Photo
    Female silhouette with visible large intestine, digital illustration.
    Digital illustration of senior man anatomy showing small intestine tumour. — Stock Photo
    Digital illustration of senior man anatomy showing small intestine tumour.
    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.
    Female anatomy with orange colored large intestine, digital illustration. — Stock Photo
    Female anatomy with orange colored large intestine, digital illustration.
    Tapeworm parasites in intestines — Stock Photo
    Tapeworm parasites in intestines
    Bowel cancer in female body, conceptual computer illustration. — Stock Photo
    Bowel cancer in female body, conceptual computer illustration.
    Digital artwork of Gram-positive anaerobic Bifidobacterium bacteria. — Stock Photo
    Digital artwork of Gram-positive anaerobic Bifidobacterium bacteria.
    Illustration of digestive system in transparent male silhouette. — Stock Photo
    Illustration of digestive system in transparent male silhouette.
    Illustration of senior man silhouette with visible small intestine. — Stock Photo
    Illustration of senior man silhouette with visible small intestine.
    Illustration of overweight woman with visible intestine on black background. — Stock Photo
    Illustration of overweight woman with visible intestine on black background.
    Human pathogenic viruses causing respiratory and enteric infections, digital illustration. — Stock Photo
    Human pathogenic viruses causing respiratory and enteric infections, 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.
    Colored large intestine in female body silhouette, digital illustration. — Stock Photo
    Colored large intestine in female body silhouette, digital illustration.
    3d anatomical model showing internal organs in female anatomy, computer illustration. — Stock Photo
    3d anatomical model showing internal organs in female anatomy, computer illustration.
    Blue colored probiotic rod-shaped gram-positive aerobic Bacillus clausii bacteria restoring microflora of intestine. — Stock Photo
    Blue colored probiotic rod-shaped gram-positive aerobic Bacillus clausii bacteria restoring microflora of intestine.
    Illustration of transparent silhouette of male body with colored internal organs. — Stock Photo
    Illustration of transparent silhouette of male body with colored internal organs.
    Human body model showing female anatomy with internal organs, digital 3d render illustration. — Stock Photo
    Human body model showing female anatomy with internal organs, digital 3d render illustration.
    Illustration of Klebsiella pneumoniae bacteria. K. pneumoniae are Gram-negative, encapsulated, non-motile, enteric, rod-shaped bacteria. This species causes Friedlander's pneumonia and urinary tract infections — Stock Photo
    Illustration of Klebsiella pneumoniae bacteria. K. pneumoniae are Gram-negative, encapsulated, non-motile, enteric, rod-shaped bacteria. This species causes Friedlander's pneumonia and urinary tract infections
    Giardia lamblia flagellated protozoan parasites, digital illustration. — Stock Photo
    Giardia lamblia flagellated protozoan parasites, digital illustration.
    Intestinal lining anatomy — Stock Photo
    Intestinal lining anatomy
    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 colon. — Stock Photo
    Illustration of senior man silhouette with visible colon.
    Cryptosporidium parvum parasite in human body causing cryptosporidiosis, digital illustration. — Stock Photo
    Cryptosporidium parvum parasite in human body causing cryptosporidiosis, digital illustration.
    Female anatomical figure with detailed small intestine, computer illustration. — Stock Photo
    Female anatomical figure with detailed small intestine, computer illustration.
    Coli bacteria on plain background, digital illustration. — Stock Photo
    Coli bacteria on plain background, digital illustration.
    Group of Trichomonas hominis protozoan parasites, digital illustration. — Stock Photo
    Group of Trichomonas hominis protozoan parasites, digital illustration.