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    Illustration of blood cells in injured artery. — Stock Photo
    Illustration of blood cells in injured artery.
    B-lymphocyte white blood cells — Stock Photo
    B-lymphocyte white blood cells
    Digital illustration of shaped virus cells. — Stock Photo
    Digital illustration of shaped virus cells.
    Red blood cells — Stock Photo
    Red blood cells
    Bacteriophages on blue background, digital illustration. — Stock Photo
    Bacteriophages on blue background, digital illustration.
    Illustration of human blood cells on black background. — Stock Photo
    Illustration of human blood cells on black background.
    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
    Red blood cells — Stock Photo
    Red blood cells
    Illustration of sphere vesicles transporting along microtubule by kinesin proteins. — Stock Photo
    Illustration of sphere vesicles transporting along microtubule by kinesin proteins.
    Epithelium of a foliate papillae of the tongue — Stock Photo
    Epithelium of a foliate papillae of the tongue
    Nerves synapse, biological digital illustration. — Stock Photo
    Nerves synapse, biological digital illustration.
    Colored scanning electron micrograph of cancer cells from human colon. — Stock Photo
    Colored scanning electron micrograph of cancer cells from human colon.
    Blood vessel with blood cells — Stock Photo
    Blood vessel with blood cells
    Macrophage foam cells with lipid droplets, digital illustration. — Stock Photo
    Macrophage foam cells with lipid droplets, digital illustration.
    Illustration of purple chloride channels in cell membrane. — Stock Photo
    Illustration of purple chloride channels in cell membrane.
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    Computer illustration showing different stages of release of malaria merozoites from a red blood cell. — Stock Photo
    Computer illustration showing different stages of release of malaria merozoites from a red blood cell.
    Close-up of hand of cell biologist holding flask of stem cells cultivated in red growth medium. — Stock Photo
    Close-up of hand of cell biologist holding flask of stem cells cultivated in red growth medium.
    Human lung tissue, light micrograph. Lungs are the primary organs of the respiratory system in humans and many other animals. Haematoxylin and eosin stain. — Stock Photo
    Human lung tissue, light micrograph. Lungs are the primary organs of the respiratory system in humans and many other animals. Haematoxylin and eosin stain.
    Digital 3d illustration of syphilis pathogens. — Stock Photo
    Digital 3d illustration of syphilis pathogens.
    3d illustration of white blood cells leukocytes secreting antibodies to destroy allergen in human body. — Stock Photo
    3d illustration of white blood cells leukocytes secreting antibodies to destroy allergen in human body.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    White blood cells, digital illustration. — Stock Photo
    White blood cells, digital illustration.
    Digital illustration of budding Saccharomyces cerevisiae yeast cells. — Stock Photo
    Digital illustration of budding Saccharomyces cerevisiae yeast cells.
    Digital illustration of budding Saccharomyces cerevisiae yeast cells. — Stock Photo
    Digital illustration of budding Saccharomyces cerevisiae yeast cells.
    Epithelium of a foliate papillae of the tongue — Stock Photo
    Epithelium of a foliate papillae of the tongue
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Fat cells, computer illustration — Stock Photo
    Fat cells, computer illustration
    Red blood cells and protein, digital illustration. — Stock Photo
    Red blood cells and protein, digital illustration.
    Red blood cells and platelets, computer illustration. — Stock Photo
    Red blood cells and platelets, computer illustration.
    Illustration of 8 cell stage egg on blue background. — Stock Photo
    Illustration of 8 cell stage egg on blue background.
    Scientist examining cultured cells under microscope. — Stock Photo
    Scientist examining cultured cells under microscope.
    Genetic engineering, conceptual illustration. — Stock Photo
    Genetic engineering, conceptual illustration.
    Antibodies attacking virus particles, computer illustration. — Stock Photo
    Antibodies attacking virus particles, computer illustration.
    Hepatocyte cells, light micrograph. Hepatocyte cells are the main parenchymal tissue cells of the liver. Haematoxylin and eosin stain. — Stock Photo
    Hepatocyte cells, light micrograph. Hepatocyte cells are the main parenchymal tissue cells of the liver. Haematoxylin and eosin stain.
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission electron micrograph. — Stock Photo
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission electron micrograph.
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    Red blood cells on white background, digital illustration. — Stock Photo
    Red blood cells on white background, digital illustration.
    Cerebellum tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Cerebellum tissue, light micrograph. Haematoxylin and eosin stain.
    Angel trumpets pollen — Stock Photo
    Angel trumpets pollen
    Protozoan Plasmodium malariae inside red blood cell in the schizont stage, computer illustration — Stock Photo
    Protozoan Plasmodium malariae inside red blood cell in the schizont stage, computer illustration
    Measles virus particles, digital illustration. — Stock Photo
    Measles virus particles, digital illustration.
    Coloured scanning electron micrograph of breast cancer cells. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cells.
    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
    Cancer cell attacked by T cell — Stock Photo
    Cancer cell attacked by T cell
    Digital artwork of round blue cells on plain background. — Stock Photo
    Digital artwork of round blue cells on plain background.
    Computer illustration of Candida fungi (yeast). most common representatives of Candida fungi are C. albicans and C. auris with similar morphology. C. albicans is found on skin and mucous membranes of mouth, genitals, respiratory — Stock Photo
    Computer illustration of Candida fungi (yeast). most common representatives of Candida fungi are C. albicans and C. auris with similar morphology. C. albicans is found on skin and mucous membranes of mouth, genitals, respiratory
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration.
    Cancer cell attacked by T cell — Stock Photo
    Cancer cell attacked by T cell
    Blue cells on black background, digital illustration. — Stock Photo
    Blue cells on black background, digital illustration.
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs — Stock Photo
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body — Stock Photo
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital illustration.
    Abstract group of particles of viruses, computer illustration. — Stock Photo
    Abstract group of particles of viruses, computer illustration.
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Bacterial cells on tissue surface — Stock Photo
    Bacterial cells on tissue surface
    Digital illustration showing red blood cells, platelets, neutrophils, monocyte and lymphocytes in normal blood smear. — Stock Photo
    Digital illustration showing red blood cells, platelets, neutrophils, monocyte and lymphocytes in normal blood smear.