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    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
    Rod-shaped bacteria Corynebacterium diphtheriae — Stock Photo
    Rod-shaped bacteria Corynebacterium diphtheriae
    Digital illustration of bacteria on tip of needle. — Stock Photo
    Digital illustration of bacteria on tip of needle.
    Lactobacillus bulgaricus bacteria — Stock Photo
    Lactobacillus bulgaricus bacteria
    Digital illustration of Salmonella Gram-negative rod-shaped bacteria with flagella. — Stock Photo
    Digital illustration of Salmonella Gram-negative rod-shaped bacteria with flagella.
    Artwork of human digestive system and close-up of bacteria in small intestine. — Stock Photo
    Artwork of human digestive system and close-up of bacteria in small intestine.
    Trichomonas vaginalis parasitic microorganism causing trichomoniasis, digital illustration. — Stock Photo
    Trichomonas vaginalis parasitic microorganism causing trichomoniasis, digital illustration.
    Digital illustration showing close-up of cholera infection bacteria in small intestine. — Stock Photo
    Digital illustration showing close-up of cholera infection bacteria in small intestine.
    Digital illustration of Acanthamoeba castellanii amoebas. — Stock Photo
    Digital illustration of Acanthamoeba castellanii amoebas.
    Conceptual illustration of food infection with piece of cake and close-up of Shigella bacteria. — Stock Photo
    Conceptual illustration of food infection with piece of cake and close-up of Shigella bacteria.
    Illustration of female reproductive system and parasitic Trichomonas vaginalis causing trichomoniasis. — Stock Photo
    Illustration of female reproductive system and parasitic Trichomonas vaginalis causing trichomoniasis.
    Colored scanning electron micrograph of rod-shaped, gram-negative bacteria Escherichia coli of human intestine. — Stock Photo
    Colored scanning electron micrograph of rod-shaped, gram-negative bacteria Escherichia coli of human intestine.
    Illustration of malaria infected blood cells. — Stock Photo
    Illustration of malaria infected blood cells.
    Illustration of malaria infected blood cells. — Stock Photo
    Illustration of malaria infected blood cells.
    Lyme disease bacteria, digital illustration. — Stock Photo
    Lyme disease bacteria, digital illustration.
    Digital illustration showing close-up of cholera infection bacteria in small intestine. — Stock Photo
    Digital illustration showing close-up of cholera infection bacteria in small intestine.
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus. — Stock Photo
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus.
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar. — Stock Photo
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar.
    Trichophyton fungi on black background, digital illustration. — Stock Photo
    Trichophyton fungi on black background, digital illustration.
    Fusarium fungus on black background, digital illustration. — Stock Photo
    Fusarium fungus on black background, digital illustration.
    Digital illustration of intestinal parasitic tapeworm head with suckers. — Stock Photo
    Digital illustration of intestinal parasitic tapeworm head with suckers.
    Illustration of malaria infected blood cells. — Stock Photo
    Illustration of malaria infected blood cells.
    Digital illustration of Legionella pneumophila bacteria causing Legionnaires disease. — Stock Photo
    Digital illustration of Legionella pneumophila bacteria causing Legionnaires disease.
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus. — Stock Photo
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus.
    Illustration of yellow abscesses on kidney and close-up of Escherichia bacteria. — Stock Photo
    Illustration of yellow abscesses on kidney and close-up of Escherichia bacteria.
    Conceptual illustration of association of Bacteroides massiliensis bacteria in intestine with prostate cancer development. — Stock Photo
    Conceptual illustration of association of Bacteroides massiliensis bacteria in intestine with prostate cancer development.
    Clostridium tetani bacterium — Stock Photo
    Clostridium tetani bacterium
    Trichomonas vaginalis causing trichomoniasis and neutrophils, digital illustration. — Stock Photo
    Trichomonas vaginalis causing trichomoniasis and neutrophils, digital illustration.
    Conceptual image of coxsackievirus cells — Stock Photo
    Conceptual image of coxsackievirus cells
    Lyme disease bacteria, digital illustration. — Stock Photo
    Lyme disease bacteria, digital illustration.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Digital illustration of Legionella pneumophila bacteria causing Legionnaires disease. — Stock Photo
    Digital illustration of Legionella pneumophila bacteria causing Legionnaires disease.
    Microscopic cross section view of HIV virus — Stock Photo
    Microscopic cross section view of HIV virus
    Fusarium fungus on white background, digital illustration. — Stock Photo
    Fusarium fungus on white background, digital illustration.
    Digital illustration of Enterobacter Gram-negative bacilli on black background. — Stock Photo
    Digital illustration of Enterobacter Gram-negative bacilli on black background.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Illustration of malaria infected blood cells. — Stock Photo
    Illustration of malaria infected blood cells.
    Bacterial blood infection, digital illustration. — Stock Photo
    Bacterial blood infection, digital illustration.
    Trichophyton fungi on white background, digital illustration. — Stock Photo
    Trichophyton fungi on white background, digital illustration.
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection. — Stock Photo
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection.
    Illustration of yellow abscesses on kidney and close-up of Enterococcus bacteria. — Stock Photo
    Illustration of yellow abscesses on kidney and close-up of Enterococcus bacteria.
    Conceptual image of coxsackievirus cells — Stock Photo
    Conceptual image of coxsackievirus cells
    Conceptual image of coxsackievirus cells — Stock Photo
    Conceptual image of coxsackievirus cells
    Digital illustration of Escherichia coli bacteria on white background. — Stock Photo
    Digital illustration of Escherichia coli bacteria on white background.
    Red blood cells and platelets — Stock Photo
    Red blood cells and platelets
    Digital artwork of Gram-positive anaerobic Bifidobacterium bacteria. — Stock Photo
    Digital artwork of Gram-positive anaerobic Bifidobacterium bacteria.
    Digital illustration of gram-positive rod-shaped mycobacterium tuberculosis bacteria. — Stock Photo
    Digital illustration of gram-positive rod-shaped mycobacterium tuberculosis bacteria.
    Digital illustration of intestinal parasitic tapeworm with suckers. — Stock Photo
    Digital illustration of intestinal parasitic tapeworm with suckers.
    Illustration of yellow abscesses on kidney and close-up of bacteria. — Stock Photo
    Illustration of yellow abscesses on kidney and close-up of bacteria.
    Illustration of irregular scarred cortical surface of kidney and close-up of Enterococcus bacteria. — Stock Photo
    Illustration of irregular scarred cortical surface of kidney and close-up of Enterococcus bacteria.
    Digital illustration of Legionella pneumophila bacteria causing Legionnaires disease. — Stock Photo
    Digital illustration of Legionella pneumophila bacteria causing Legionnaires disease.
    Illustration of female reproductive system and parasitic Trichomonas vaginalis causing trichomoniasis. — Stock Photo
    Illustration of female reproductive system and parasitic Trichomonas vaginalis causing trichomoniasis.