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    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple. — Stock Photo
    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple.
    Abstract cancer cells, digital illustration. — Stock Photo
    Abstract cancer cells, digital illustration.
    Intestinal microvilli. Coloured scanning electron micrograph (SEM) of microvilli from the small intestine. These tiny structures form a dense brush-like covering on the absorptive surfaces of the cells lining the small intestine — Stock Photo
    Intestinal microvilli. Coloured scanning electron micrograph (SEM) of microvilli from the small intestine. These tiny structures form a dense brush-like covering on the absorptive surfaces of the cells lining the small intestine
    Leucocyte cell capturing harmful bacteria, computer illustration. — Stock Photo
    Leucocyte cell capturing harmful bacteria, computer illustration.
    Deoxyribonucleic acid molecule composition and structure — Stock Photo
    Deoxyribonucleic acid molecule composition and structure
    Microbiological culture growing in Petri dish, close-up. — Stock Photo
    Microbiological culture growing in Petri dish, close-up.
    Pipette adding sample to petri dish with DNA autoradiogram in background. — Stock Photo
    Pipette adding sample to petri dish with DNA autoradiogram in background.
    Digital labelled illustration showing bacteria causing nosocomial pneumonia, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli. — Stock Photo
    Digital labelled illustration showing bacteria causing nosocomial pneumonia, Staphylococcus aureus, Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli.
    Human sperm cells — Stock Photo
    Human sperm cells
    Spirillum bacteria infection — Stock Photo
    Spirillum bacteria infection
    Female researcher pipetting liquid in science laboratory. — Stock Photo
    Female researcher pipetting liquid in science laboratory.
    3d illustration of red transparent sperm cells swimming towards egg cell. — Stock Photo
    3d illustration of red transparent sperm cells swimming towards egg cell.
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Human sperm approaching egg cell — Stock Photo
    Human sperm approaching egg cell
    DNA molecule, abstract scientific illustration. — Stock Photo
    DNA molecule, abstract scientific illustration.
    Helicobacter pyloris bacteria — Stock Photo
    Helicobacter pyloris bacteria
    Antibodies attacking cancer cell, computer illustration — Stock Photo
    Antibodies attacking cancer cell, computer illustration
    Illustration different types of polymeric nanoparticles used for drug delivery. From clockwise: nanosphere (top left), dendrimer (top right), polymer micelle (bottom right) and polymersome (bottom left). — Stock Photo
    Illustration different types of polymeric nanoparticles used for drug delivery. From clockwise: nanosphere (top left), dendrimer (top right), polymer micelle (bottom right) and polymersome (bottom left).
    Immature parasitic trematode — Stock Photo
    Immature parasitic trematode
    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.
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus — Stock Photo
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant — Stock Photo
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant
    Conceptual 3d illustration of artificial insemination, in vitro fertilization of human egg cell. — Stock Photo
    Conceptual 3d illustration of artificial insemination, in vitro fertilization of human egg cell.
    Red blood cells and protein, digital illustration. — Stock Photo
    Red blood cells and protein, digital illustration.
    Scientists using pipette with digital display. — Stock Photo
    Scientists using pipette with digital display.
    Herpes simplex virus, computer illustration — Stock Photo
    Herpes simplex virus, computer illustration
    Digital illustration of human cell anatomy. — Stock Photo
    Digital illustration of human cell anatomy.
    DNA strand against blue background, digital illustration. — Stock Photo
    DNA strand against blue background, digital illustration.
    DNA molecule and enzymes, digital illustration. — Stock Photo
    DNA molecule and enzymes, digital illustration.
    Various microbes of different shapes — Stock Photo
    Various microbes of different shapes
    Activated platelets in blood flow, illustration. — Stock Photo
    Activated platelets in blood flow, illustration.
    Digital illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Salmonella, Shigella. — Stock Photo
    Digital illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Salmonella, Shigella.
    Human fetus developing at week 27, computer illustration. — Stock Photo
    Human fetus developing at week 27, computer illustration.
    Light micrograph of Hydra, a genus of small, fresh-water animals of the phylum Cnidaria and class Hydrozoa. — Stock Photo
    Light micrograph of Hydra, a genus of small, fresh-water animals of the phylum Cnidaria and class Hydrozoa.
    Digital illustration of blue rod-shaped bacteria on grey background. — Stock Photo
    Digital illustration of blue rod-shaped bacteria on grey background.
    Bacteria multiplying on surface, digital illustration. — Stock Photo
    Bacteria multiplying on surface, digital illustration.
    CRISPR-Cas9 gene editing complex and DNA, computer illustration — Stock Photo
    CRISPR-Cas9 gene editing complex and DNA, computer illustration
    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
    Fungal cells revealing sporangium with spores — Stock Photo
    Fungal cells revealing sporangium with spores
    Digital illustration of human digestive system and close-up of intestinal bacteria. — Stock Photo
    Digital illustration of human digestive system and close-up of intestinal bacteria.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Colonies of Penicillium fungi grown on Sabouraud Dextrose Agar and digital illustration of fungal morphology. — Stock Photo
    Colonies of Penicillium fungi grown on Sabouraud Dextrose Agar and digital illustration of fungal morphology.
    Spherical and rod-shaped bacteria inside biofilm, digital illustration. — Stock Photo
    Spherical and rod-shaped bacteria inside biofilm, digital illustration.
    Abstract animal cells, digital illustration. — Stock Photo
    Abstract animal cells, digital illustration.
    Digital illustration of chains of Streptobacillus moniliformis rat bite fever bacteria. — Stock Photo
    Digital illustration of chains of Streptobacillus moniliformis rat bite fever bacteria.
    Conceptual illustration of piece of cake and magnification of bacteria of food-borne infection on white background. — Stock Photo
    Conceptual illustration of piece of cake and magnification of bacteria of food-borne infection on white background.
    Fibrous-cavernous pulmonary tuberculosis and close-up of Mycobacterium tuberculosis bacteria. — Stock Photo
    Fibrous-cavernous pulmonary tuberculosis and close-up of Mycobacterium tuberculosis bacteria.
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Schoolboy doing science experiment in school chemistry laboratory. — Stock Photo
    Schoolboy doing science experiment in school chemistry laboratory.
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Female scientist in laboratory looking at glass flask with dissolved samples of soil. — Stock Photo
    Female scientist in laboratory looking at glass flask with dissolved samples of soil.
    HIV viruses infecting T-lymphocyte cell — Stock Photo
    HIV viruses infecting T-lymphocyte cell
    Cancer cell spreading, digital illustration. — Stock Photo
    Cancer cell spreading, digital illustration.
    Asparagus beetle head — Stock Photo
    Asparagus beetle head
    Simian virus 40 particle — Stock Photo
    Simian virus 40 particle
    Lymphocytes attacking a cancer cell — Stock Photo
    Lymphocytes attacking a cancer cell
    Nerve cell, computer illustration — Stock Photo
    Nerve cell, computer illustration
    Digital illustration of virus particles on black background. — Stock Photo
    Digital illustration of virus particles on black background.
    3d illustration of damaged spermatozoon in human sperm. — Stock Photo
    3d illustration of damaged spermatozoon in human sperm.