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    Measles virus particles budding from cells, digital illustration. — Stock Photo
    Measles virus particles budding from cells, digital illustration.
    3d illustration of red blood cells disintegrating. — Stock Photo
    3d illustration of red blood cells disintegrating.
    Measles virus particles budding from cells, digital illustration. — Stock Photo
    Measles virus particles budding from cells, digital illustration.
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Red blood cells aggregated — Stock Photo
    Red blood cells aggregated
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells — Stock Photo
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells
    Adipocyte fat cell — Stock Photo
    Adipocyte fat cell
    Destruction of a cancer cell by antibodies — Stock Photo
    Destruction of a cancer cell by antibodies
    Cancer cell with filaments — Stock Photo
    Cancer cell with filaments
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Rotavirus virus particles in the blood — Stock Photo
    Rotavirus virus particles in the blood
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Scanning electron microscopy of DNA molecules and red and white blood cells. — Stock Photo
    Scanning electron microscopy of DNA molecules and red and white blood cells.
    Digital illustration of nerve neurons cells. — Stock Photo
    Digital illustration of nerve neurons cells.
    Laboratory worker pipetting liquid into microcentrifuge tube. — Stock Photo
    Laboratory worker pipetting liquid into microcentrifuge tube.
    3d illustration of sperm cells on blue background. — Stock Photo
    3d illustration of sperm cells on blue background.
    Cancer cells and white blood cells — Stock Photo
    Cancer cells and white blood cells
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Flu virus cells in imaging flow cytometry colours, digital illustration. — Stock Photo
    Flu virus cells in imaging flow cytometry colours, digital illustration.
    Cancer cell morphology — Stock Photo
    Cancer cell morphology
    Human Fertilisation, computer illustration — Stock Photo
    Human Fertilisation, computer illustration
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem. — Stock Photo
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem.
    Christmas cactus pollen — Stock Photo
    Christmas cactus pollen
    Plant cells, 3d illustration — Stock Photo
    Plant cells, 3d illustration
    Cell membrane structure, digital illustration. — Stock Photo
    Cell membrane structure, digital illustration.
    Anthrax bacteria, illustration. Anthrax bacteria (Bacillus anthracis) are the cause of the disease anthrax in humans and livestock. They are gram-positive spore producing bacteria arranged in chains (streptobacilli). — Stock Photo
    Anthrax bacteria, illustration. Anthrax bacteria (Bacillus anthracis) are the cause of the disease anthrax in humans and livestock. They are gram-positive spore producing bacteria arranged in chains (streptobacilli).
    Macrophage foam cells containing lipid droplets, digital illustration. — Stock Photo
    Macrophage foam cells containing lipid droplets, digital illustration.
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain.
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    Protein cluster on plain background, digital illustration. — Stock Photo
    Protein cluster on plain background, digital illustration.
    Human multi-cellular embryo — Stock Photo
    Human multi-cellular embryo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil blood cells. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil blood cells.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Digital illustration of immunoglobulin in blood. — Stock Photo
    Digital illustration of immunoglobulin in blood.
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Cancer cell morphology — Stock Photo
    Cancer cell morphology
    Pathological anatomy of atherosclerosis — Stock Photo
    Pathological anatomy of atherosclerosis
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Activation of Ras proteins, digital illustration. — Stock Photo
    Activation of Ras proteins, digital illustration.
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease — Stock Photo
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration.
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Sperm spermatozoa swimming towards egg cell, colored digital illustration. — Stock Photo
    Sperm spermatozoa swimming towards egg cell, colored digital illustration.
    Human brain with close-up view of neurons, computer illustration. — Stock Photo
    Human brain with close-up view of neurons, computer illustration.
    Group of virus particles, digital illustration. — Stock Photo
    Group of virus particles, digital illustration.
    Red blood cells, computer illustration — Stock Photo
    Red blood cells, computer illustration
    Mature virus and budding release of HIV — Stock Photo
    Mature virus and budding release of HIV
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte. — Stock Photo
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte.
    Intestinal lining. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( yellow) is exposed to food — Stock Photo
    Intestinal lining. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( yellow) is exposed to food
    Nipah virus particles, digital artwork. — Stock Photo
    Nipah virus particles, digital artwork.
    Intestinal villi, computer illustration — Stock Photo
    Intestinal villi, computer illustration
    Illustration of human kidney and light micrograph of section with glomerulus. — Stock Photo
    Illustration of human kidney and light micrograph of section with glomerulus.
    Ebola virus particles on black background, digital illustration. — Stock Photo
    Ebola virus particles on black background, digital illustration.
    Digital illustration of human leg affected by lymphatic filariasis and close-up of microfilaria worm parasite. — Stock Photo
    Digital illustration of human leg affected by lymphatic filariasis and close-up of microfilaria worm parasite.
    Tumour tissue cells, digital illustration. — Stock Photo
    Tumour tissue cells, digital illustration.
    Bacterial cells on tissue surface — Stock Photo
    Bacterial cells on tissue surface
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration