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    Digital illustration showing bacteria causing infections of respiratory system, heart and digestive tract, Mycobacterium tuberculosis, Enterococcus faecalis, Salmonella, Shigella. — Stock Photo
    Digital illustration showing bacteria causing infections of respiratory system, heart and digestive tract, Mycobacterium tuberculosis, Enterococcus faecalis, Salmonella, Shigella.
    Digital illustration of rod-shaped bacteria colony. — Stock Photo
    Digital illustration of rod-shaped bacteria colony.
    Running male silhouette with glowing nervous system, digital illustration. — Stock Photo
    Running male silhouette with glowing nervous system, digital illustration.
    Cancer cell attacked by T cell — Stock Photo
    Cancer cell attacked by T cell
    Human papillomavirus, illustration. Human papilloma virus (HPV) causes warts, which mostly occur on the hands and feet. Certain strains also infect the genitals — Stock Photo
    Human papillomavirus, illustration. Human papilloma virus (HPV) causes warts, which mostly occur on the hands and feet. Certain strains also infect the genitals
    3d illustration of a Salmonella sp. bacterium approaching human cell — Stock Photo
    3d illustration of a Salmonella sp. bacterium approaching human cell
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Capsid of hepatitis B virus — Stock Photo
    Capsid of hepatitis B virus
    Infected human bronchus — Stock Photo
    Infected human bronchus
    Digital illustration of trypanosome parasites in blood which causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasites in blood which causing Chagas disease.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Nanobot in bloodstream with red erythrocytes, digital illustration. — Stock Photo
    Nanobot in bloodstream with red erythrocytes, digital illustration.
    Acute pyelonephritis. Illustration of small abscesses (yellow) on surface of kidney in case of acute pyelonephritis — Stock Photo
    Acute pyelonephritis. Illustration of small abscesses (yellow) on surface of kidney in case of acute pyelonephritis
    Cancer cell and T cells — Stock Photo
    Cancer cell and T cells
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Abstract representation of a wormhole consisting of lines and points, 3d illustration. — Stock Photo
    Abstract representation of a wormhole consisting of lines and points, 3d illustration.
    Spherical and rod-shaped bacteria inside biofilm, digital illustration. — Stock Photo
    Spherical and rod-shaped bacteria inside biofilm, digital illustration.
    DNA strand against blue background, digital illustration. — Stock Photo
    DNA strand against blue background, digital illustration.
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Brain connections, conceptual digital illustration. — Stock Photo
    Brain connections, conceptual digital illustration.
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration — Stock Photo
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Newborn head and chest anatomy — Stock Photo
    Newborn head and chest anatomy
    Cancer cell morphology — Stock Photo
    Cancer cell morphology
    Destruction of cancer cell, digital conceptual illustration illustrating treatment of cancer by drugs, nanoparticles and antibodies. — Stock Photo
    Destruction of cancer cell, digital conceptual illustration illustrating treatment of cancer by drugs, nanoparticles and antibodies.
    Virus particles in blood stream, digital illustration. — Stock Photo
    Virus particles in blood stream, digital illustration.
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Skeletal muscle structure — Stock Photo
    Skeletal muscle structure
    Rotavirus particles infecting human intestine, digital artwork. — Stock Photo
    Rotavirus particles infecting human intestine, digital artwork.
    Nanoparticles in blood — Stock Photo
    Nanoparticles in blood
    Plant leaf structure, illustration. Cross-section of a typical plant leaf. In most plants, leaves are the major site of photosynthesis — Stock Photo
    Plant leaf structure, illustration. Cross-section of a typical plant leaf. In most plants, leaves are the major site of photosynthesis
    Bacteriophage virus cell infecting bacterium, digital illustration. — Stock Photo
    Bacteriophage virus cell infecting bacterium, digital illustration.
    Red blood cells on white background, digital illustration. — Stock Photo
    Red blood cells on white background, digital illustration.
    Zika virus blue particles, digital illustration. — Stock Photo
    Zika virus blue particles, digital illustration.
    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.
    Space elevator over planet surface, digital illustration — Stock Photo
    Space elevator over planet surface, digital illustration
    Visual rendering of human brain — Stock Photo
    Visual rendering of human brain
    Human papilloma virus (HPV), computer illustration — Stock Photo
    Human papilloma virus (HPV), computer illustration
    Neisseria gonorrhoeae bacteria, illustration. — Stock Photo
    Neisseria gonorrhoeae bacteria, illustration.
    Cancer cells in human brain, digital illustration. — Stock Photo
    Cancer cells in human brain, digital illustration.
    Transparent cells on purple background, digital illustration. — Stock Photo
    Transparent cells on purple background, 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.
    Structure of eosinophil blood cell — Stock Photo
    Structure of eosinophil blood cell
    Meningitis bacteria (Neisseria meningitidis), computer illustration — Stock Photo
    Meningitis bacteria (Neisseria meningitidis), computer illustration
    Ebola virus particle, digital illustration. — Stock Photo
    Ebola virus particle, digital illustration.
    Cell infected with virus particles causing a programmed cell death, 3d illustration — Stock Photo
    Cell infected with virus particles causing a programmed cell death, 3d illustration
    Digital network, conceptual illustration — Stock Photo
    Digital network, conceptual illustration
    Tumour tissue cells, digital illustration. — Stock Photo
    Tumour tissue cells, digital illustration.
    Cancer invasion into surrounding tissues, conceptual computer illustration. — Stock Photo
    Cancer invasion into surrounding tissues, conceptual computer illustration.
    Mycoplasma genitalium parasitic bacteria, digital illustration. — Stock Photo
    Mycoplasma genitalium parasitic bacteria, digital illustration.
    HIV human immunodeficiency virus in bloodstream, digital illustration — Stock Photo
    HIV human immunodeficiency virus in bloodstream, digital illustration
    Enzyme on plain background, digital illustration. — Stock Photo
    Enzyme on plain background, digital illustration.
    Chicken eggs in carton and close-up of Listeria monocytogenes bacteria. — Stock Photo
    Chicken eggs in carton and close-up of Listeria monocytogenes bacteria.
    Red blood cells — Stock Photo
    Red blood cells
    Abstract black shiny mesh pattern, illustration. — Stock Photo
    Abstract black shiny mesh pattern, 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
    Human hair shafts, computer illustration — Stock Photo
    Human hair shafts, computer illustration
    Digital three dimensional illustration of human lungs. — Stock Photo
    Digital three dimensional illustration of human lungs.
    Illustration of an antibody, or immunoglobulin. This y-shaped molecule has two arms that can bind to specific antigens, for instance viral or bacterial proteins. In doing this they mark the antigen for destruction by phagocytes, white blood cells tha — Stock Photo
    Illustration of an antibody, or immunoglobulin. This y-shaped molecule has two arms that can bind to specific antigens, for instance viral or bacterial proteins. In doing this they mark the antigen for destruction by phagocytes, white blood cells tha