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    Illustration of rod-shaped and spherical (cocci) bacteria. Rod-shaped bacteria include Escherichia coli, Salmonella, Shigella, Legionella, Mycobacterium, Klebsiella and other species. Spherical bacteria include Staphylococci and Streptococci species — Stock Photo
    Illustration of rod-shaped and spherical (cocci) bacteria. Rod-shaped bacteria include Escherichia coli, Salmonella, Shigella, Legionella, Mycobacterium, Klebsiella and other species. Spherical bacteria include Staphylococci and Streptococci species
    Chicken eggs in carton and close-up of Listeria monocytogenes bacteria. — Stock Photo
    Chicken eggs in carton and close-up of Listeria monocytogenes bacteria.
    Digital artwork of round transparent cells on white background. — Stock Photo
    Digital artwork of round transparent cells on white background.
    Probiotic bacteria in normal intestinal microbiota, digital illustration. — Stock Photo
    Probiotic bacteria in normal intestinal microbiota, digital illustration.
    Illustration of small intestine and close-up of infection in male body silhouette on black background. — Stock Photo
    Illustration of small intestine and close-up of infection in male body silhouette on black background.
    Bacterial brain infection. Conceptual computer illustration showing Streptococcus pneumoniae bacteria, one of the main causes of bacterial meningitis and meningoencephalitis, infecting brain cells — Stock Photo
    Bacterial brain infection. Conceptual computer illustration showing Streptococcus pneumoniae bacteria, one of the main causes of bacterial meningitis and meningoencephalitis, infecting brain cells
    Rod-shaped bacteria — Stock Photo
    Rod-shaped bacteria
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria.
    Moraxella (Branhamella) catarrhalis bacteria, illustration. These are aerobic, gram-negative cocci (spherical bacteria) which are commonly found in the mucous membranes of the respiratory tract of mammals, including humans — Stock Photo
    Moraxella (Branhamella) catarrhalis bacteria, illustration. These are aerobic, gram-negative cocci (spherical bacteria) which are commonly found in the mucous membranes of the respiratory tract of mammals, including humans
    Researcher holding a petri dish — Stock Photo
    Researcher holding a petri dish
    Digital illustration of Mycobacterium leprae gram-positive rod-shaped bacteria, causative agent of disease leprosy. — Stock Photo
    Digital illustration of Mycobacterium leprae gram-positive rod-shaped bacteria, causative agent of disease leprosy.
    Close-up of scientist hand holding Petri dish in pathology laboratory. — Stock Photo
    Close-up of scientist hand holding Petri dish in pathology laboratory.
    Microbiologist working in laboratory with bacteria growth in petri dish. — Stock Photo
    Microbiologist working in laboratory with bacteria growth in petri dish.
    Closeup of Microbe, conceptual illustration — Stock Photo
    Closeup of Microbe, conceptual 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
    Whooping cough contagious infectious lungs disease and close-up of Bordetella pertussis bacteria. — Stock Photo
    Whooping cough contagious infectious lungs disease and close-up of Bordetella pertussis bacteria.
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Secondary tuberculosis lungs infection and close-up of Mycobacterium tuberculosis bacteria.
    Collage of many KN95 factor protection masks on a red background overhead view — Stock Photo
    Collage of many KN95 factor protection masks on a red background overhead view
    Colony of Micrococcus luteus bacteria on surface of nutrient medium, digital illustration. — Stock Photo
    Colony of Micrococcus luteus bacteria on surface of nutrient medium, digital illustration.
    Pneumonia caused by Mycoplasma pneumoniae bacteria, conceptual digital illustration. — Stock Photo
    Pneumonia caused by Mycoplasma pneumoniae bacteria, conceptual digital illustration.
    Computer illustration of staphylococci bacteria (Staphylococcus aureus) — Stock Photo
    Computer illustration of staphylococci bacteria (Staphylococcus aureus)
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration. — Stock Photo
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration.
    Digital 3d illustration of Pseudomonas aeruginosa bacteria. — Stock Photo
    Digital 3d illustration of Pseudomonas aeruginosa bacteria.
    Rod-shaped bacterial infection — Stock Photo
    Rod-shaped bacterial infection
    Petri dish with blood agar on blue background. — Stock Photo
    Petri dish with blood agar on blue background.
    Midsection of female microbiologist taking sample with inoculation loop. — Stock Photo
    Midsection of female microbiologist taking sample with inoculation loop.
    Petri dishes with blood agar on blue background. — Stock Photo
    Petri dishes with blood agar on blue background.
    Various microbes of different shapes — Stock Photo
    Various microbes of different shapes
    Bifidobacterium bacteria, computer illustration. Bifidobacteria are Gram-positive anaerobic bacteria that live in gastrointestinal tract, vagina and mouth — Stock Photo
    Bifidobacterium bacteria, computer illustration. Bifidobacteria are Gram-positive anaerobic bacteria that live in gastrointestinal tract, vagina and mouth
    Bacterial culture grown from human skin on Petri dish with nutrient medium. — Stock Photo
    Bacterial culture grown from human skin on Petri dish with nutrient medium.
    Yellow rod-shaped Citrobacter bacteria, digital illustration. — Stock Photo
    Yellow rod-shaped Citrobacter bacteria, digital illustration.
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration. These Gram-positive spherical bacteria are usually found in pairs. They colonize respiratory tract asymptomatically in healthy carriers, but can cause pneumonia — Stock Photo
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration. These Gram-positive spherical bacteria are usually found in pairs. They colonize respiratory tract asymptomatically in healthy carriers, but can cause pneumonia
    Viral particle structure — Stock Photo
    Viral particle structure
    Closeup of Bacteria, computer illustration — Stock Photo
    Closeup of Bacteria, computer illustration
    Close-up of antibiotic testing in petri dish. — Stock Photo
    Close-up of antibiotic testing in petri dish.
    Meningitis bacteria (Neisseria meningitidis), computer illustration — Stock Photo
    Meningitis bacteria (Neisseria meningitidis), computer illustration
    Neisseria gonorrhoeae bacteria, digital illustration. — Stock Photo
    Neisseria gonorrhoeae bacteria, digital illustration.
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth. — Stock Photo
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth.
    Clostridium tetani bacterium — Stock Photo
    Clostridium tetani bacterium
    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.
    Microbiologist working with petri dish and test tubes in laboratory. — Stock Photo
    Microbiologist working with petri dish and test tubes in laboratory.
    Gram-negative plague bacteria Yersinia pestis with bipolar staining, digital illustration. — Stock Photo
    Gram-negative plague bacteria Yersinia pestis with bipolar staining, digital illustration.
    Otitis media ear infection caused by Streptococcus pneumoniae bacteria, conceptual computer illustration — Stock Photo
    Otitis media ear infection caused by Streptococcus pneumoniae bacteria, conceptual computer illustration
    Salmonella sp. bacteria on tissue surface — Stock Photo
    Salmonella sp. bacteria on tissue surface
    Rod-shaped bacteria infecting organism — Stock Photo
    Rod-shaped bacteria infecting organism
    Miliary tuberculosis disease in lungs, digital illustration and light micrograph. — Stock Photo
    Miliary tuberculosis disease in lungs, digital illustration and light micrograph.
    Group of flagella cholera bacteria, digital illustration. — Stock Photo
    Group of flagella cholera bacteria, digital illustration.
    Digital illustration of Mycobacterium tuberculosis gram-positive rod-shaped bacteria which causing disease tuberculosis. — Stock Photo
    Digital illustration of Mycobacterium tuberculosis gram-positive rod-shaped bacteria which causing disease tuberculosis.
    Digital illustration of human digestive system and microscopic images of bacteria. — Stock Photo
    Digital illustration of human digestive system and microscopic images of bacteria.
    Close-up of hands of scientist taking sample from culture in Petri dish. — Stock Photo
    Close-up of hands of scientist taking sample from culture in Petri dish.
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Illustration of red and inflamed human appendix and close-up of bacteria causative agents of appendicitis. — Stock Photo
    Illustration of red and inflamed human appendix and close-up of bacteria causative agents of appendicitis.
    Examining petri dish under microscope. — Stock Photo
    Examining petri dish under microscope.
    Fibrous-cavernous pulmonary tuberculosis and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Fibrous-cavernous pulmonary tuberculosis and close-up of Mycobacterium tuberculosis bacteria.
    Plague bacteria (Yersinia pestis), computer illustration. Y. pestis are gram-negative bacteria from the Enterobacteriaceae family, they have an ovoid shape with bipolar staining (more intensively stained at poles) — Stock Photo
    Plague bacteria (Yersinia pestis), computer illustration. Y. pestis are gram-negative bacteria from the Enterobacteriaceae family, they have an ovoid shape with bipolar staining (more intensively stained at poles)
    Tuberculosis bacteria. Computer illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis — Stock Photo
    Tuberculosis bacteria. Computer illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis
    Bacteria colony reproducing on tissue surface — Stock Photo
    Bacteria colony reproducing on tissue surface
    Digital illustration of virus particles on plain background. — Stock Photo
    Digital illustration of virus particles on plain background.
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth. — Stock Photo
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth.
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus