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    West Nile virus particles, computer illustration. West Nile virus (WNV) is known to cause encephalitis in humans. — Stock Photo
    West Nile virus particles, computer illustration. West Nile virus (WNV) is known to cause encephalitis in humans.
    Light micrograph of a section through a lymph node affected by Hodgkin's lymphoma. — Stock Photo
    Light micrograph of a section through a lymph node affected by Hodgkin's lymphoma.
    Digital illustration of core particles of bluetongue virus with proteins represented by colored blobs. — Stock Photo
    Digital illustration of core particles of bluetongue virus with proteins represented by colored blobs.
    Arachnoidiscus sp. diatom algae — Stock Photo
    Arachnoidiscus sp. diatom algae
    Clostridium bacteria, computer illustration. Clostridia are spore-forming bacteria that include several human pathogenic species, C. difficile, C. tetani, C. botulinum, C. perfringens, and others. C. difficile is a normal inhabitant of the human inte — Stock Photo
    Clostridium bacteria, computer illustration. Clostridia are spore-forming bacteria that include several human pathogenic species, C. difficile, C. tetani, C. botulinum, C. perfringens, and others. C. difficile is a normal inhabitant of the human inte
    Close-up of pipette pipetting into test tubes in pathogenic laboratory. — Stock Photo
    Close-up of pipette pipetting into test tubes in pathogenic laboratory.
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Researcher holding a petri dish — Stock Photo
    Researcher holding a petri dish
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis (TB). The disease affects the lungs and sometimes other parts of the body — Stock Photo
    Illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis (TB). The disease affects the lungs and sometimes other parts of the body
    Plasmodium malariae protozoan parasite, digital illustration. — Stock Photo
    Plasmodium malariae protozoan parasite, digital illustration.
    Varicella zoster (chickenpox) virus, illustration. The virus consists of a lipid membrane envelope with glycoproteins, a protective capsid holding the nucleic acid — Stock Photo
    Varicella zoster (chickenpox) virus, illustration. The virus consists of a lipid membrane envelope with glycoproteins, a protective capsid holding the nucleic acid
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Brucella bacteria, illustration. Brucella is a Gram negative, non-sporing, aerobic bacillus (rod- shaped bacteria) — Stock Photo
    Brucella bacteria, illustration. Brucella is a Gram negative, non-sporing, aerobic bacillus (rod- shaped bacteria)
    Illustration of antibodies (blue) attaching to a viral (purple) infected cell. Antibodies bind to specific antigens, for instance viral proteins displayed on the surface of infected cells, marking them for destruction by phagocyte immune cells. — Stock Photo
    Illustration of antibodies (blue) attaching to a viral (purple) infected cell. Antibodies bind to specific antigens, for instance viral proteins displayed on the surface of infected cells, marking them for destruction by phagocyte immune cells.
    Various microbes of different shapes — Stock Photo
    Various microbes of different shapes
    Blue orthomyxovirus particle on background, illustration. — Stock Photo
    Blue orthomyxovirus particle on background, illustration.
    Ebola virus, digital illustration. — Stock Photo
    Ebola virus, digital illustration.
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019 — Stock Photo
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019
    Coronavirus particle, computer illustration — Stock Photo
    Coronavirus particle, computer illustration
    Digital illustration of shaped virus cells. — Stock Photo
    Digital illustration of shaped virus cells.
    Chlamydia bacteria, illustration — Stock Photo
    Chlamydia bacteria, illustration
    Lungs pneumonia caused by Mycoplasma pneumoniae bacteria, conceptual illustration. — Stock Photo
    Lungs pneumonia caused by Mycoplasma pneumoniae bacteria, conceptual illustration.
    Close-up of empty and sterile phials in red plastic box. — Stock Photo
    Close-up of empty and sterile phials in red plastic box.
    Malaria infection infecting red blood cells, digital illustration. — Stock Photo
    Malaria infection infecting red blood cells, digital illustration.
    Stacked Petri dishes with blood samples. — Stock Photo
    Stacked Petri dishes with blood samples.
    Rat bite fever bacteria, computer illustration — Stock Photo
    Rat bite fever bacteria, computer illustration
    Digital illustration of Legionella pneumophila bacteria, cause of Legionnaires disease. — Stock Photo
    Digital illustration of Legionella pneumophila bacteria, cause of Legionnaires disease.
    Bacterial colonies on agar plates — Stock Photo
    Bacterial colonies on agar plates
    Nodamura virus particle — Stock Photo
    Nodamura virus particle
    Digital illustration of threadworm in human intestine. — Stock Photo
    Digital illustration of threadworm in human intestine.
    Campylodiscus fastuosus diatom — Stock Photo
    Campylodiscus fastuosus diatom
    3d illustration of leukocyte cells secreting allergen antibodies while allergy. — Stock Photo
    3d illustration of leukocyte cells secreting allergen antibodies while allergy.
    Computer illustration of coronavirus particle — Stock Photo
    Computer illustration of coronavirus particle
    Bacteriastrum sp. diatom algae — Stock Photo
    Bacteriastrum sp. diatom algae
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats — Stock Photo
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats
    Computer illustration of rod-shaped bacilli bacteria inside alveolus of lung, causing lower respiratory tract infection and bacterial pneumonia. — Stock Photo
    Computer illustration of rod-shaped bacilli bacteria inside alveolus of lung, causing lower respiratory tract infection and bacterial pneumonia.
    Digital illustration of saprophyte green mould conidiophore producing conidia. — Stock Photo
    Digital illustration of saprophyte green mould conidiophore producing conidia.
    Microbiological cultures growing in Petri dishes. — Stock Photo
    Microbiological cultures growing in Petri dishes.
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma
    Multichannel pipette and red well plate in laboratory. — Stock Photo
    Multichannel pipette and red well plate in laboratory.
    Digital illustration of trypanosome parasites in blood which causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasites in blood which causing Chagas disease.
    Antibodies attacking virus particles, computer illustration. — Stock Photo
    Antibodies attacking virus particles, computer illustration.
    Illustration of antibodies (yellow and blue) responding to an infection with the new coronavirus SARS-CoV-2 (red) — Stock Photo
    Illustration of antibodies (yellow and blue) responding to an infection with the new coronavirus SARS-CoV-2 (red)
    Freshwater sponge (Spongilla sp.), coloured scanning electron micrograph (SEM). — Stock Photo
    Freshwater sponge (Spongilla sp.), coloured scanning electron micrograph (SEM).
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Bacteria infecting organism — Stock Photo
    Bacteria infecting organism
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats — Stock Photo
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats
    Stacked agar plates with microbiological cultures on plain background. — Stock Photo
    Stacked agar plates with microbiological cultures on plain background.
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    West Nile virus particles, computer illustration. West Nile virus (WNV) is known to cause encephalitis in humans. — Stock Photo
    West Nile virus particles, computer illustration. West Nile virus (WNV) is known to cause encephalitis in humans.
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019 — Stock Photo
    Covid-19 coronavirus particle, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019
    Young female scientist working in microbiology lab. — Stock Photo
    Young female scientist working in microbiology lab.
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis — Stock Photo
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis
    Arenavirus (or Lassa virus, LASV) particles budding from a cell, illustration. This virus mainly infects rodents, but can infect humans through exposure to infected rodent faeces or urine — Stock Photo
    Arenavirus (or Lassa virus, LASV) particles budding from a cell, illustration. This virus mainly infects rodents, but can infect humans through exposure to infected rodent faeces or urine
    Abstract illustration of white bacilli bacteria, full frame. — Stock Photo
    Abstract illustration of white bacilli bacteria, full frame.
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Freshwater single diatom — Stock Photo
    Freshwater single diatom