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    Female cell biologist placing flask containing stem cells cultivated in red growth medium under microscope. — Stock Photo
    Female cell biologist placing flask containing stem cells cultivated in red growth medium under microscope.
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample. — Stock Photo
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample.
    Healthy red blood cells — Stock Photo
    Healthy red blood cells
    Nerve cell structure — Stock Photo
    Nerve cell structure
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli. — Stock Photo
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli.
    Animal cell during cytokinesis cell division, digital illustration. — Stock Photo
    Animal cell during cytokinesis cell division, digital illustration.
    Neural network showing synaptic terminals — Stock Photo
    Neural network showing synaptic terminals
    Eosinophilia blood smear with numerous eosinophils, digital illustration. — Stock Photo
    Eosinophilia blood smear with numerous eosinophils, digital illustration.
    Fractured pancreas tissue — Stock Photo
    Fractured pancreas tissue
    B cells and antibodies, computer illustration. — Stock Photo
    B cells and antibodies, computer illustration.
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Red blood cells — Stock Photo
    Red blood cells
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample. — Stock Photo
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample.
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Visual rendering of Human cells — Stock Photo
    Visual rendering of Human cells
    Tumour tissue cells, digital illustration. — Stock Photo
    Tumour tissue cells, digital illustration.
    Lymphocyte white blood cell, digital illustration. — Stock Photo
    Lymphocyte white blood cell, digital illustration.
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Nerve cells and axon connections — Stock Photo
    Nerve cells and axon connections
    Green colored nerve cell on white background, digital illustration. — Stock Photo
    Green colored nerve cell on white background, digital illustration.
    Digital artwork of white blood cells attacking illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking illuminated cancer cell.
    Cancer cell anatomy — Stock Photo
    Cancer cell anatomy
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration.
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Red blood cells — Stock Photo
    Red blood cells
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Colored scanning electron micrograph of cancer cells from human colon. — Stock Photo
    Colored scanning electron micrograph of cancer cells from human colon.
    Nerve cell, computer illustration — Stock Photo
    Nerve cell, computer illustration
    Human cytomegalovirus particles in blood flow, digital illustration. — Stock Photo
    Human cytomegalovirus particles in blood flow, digital illustration.
    Brain cancer, conceptual computer illustration — Stock Photo
    Brain cancer, conceptual computer illustration
    Cancer cell structure and shape — Stock Photo
    Cancer cell structure and shape
    Cytotoxic T-cells capturing cancer cells, digital illustration. — Stock Photo
    Cytotoxic T-cells capturing cancer cells, digital illustration.
    Astrocyte glial nerve cell, digital illustration. — Stock Photo
    Astrocyte glial nerve cell, digital illustration.
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Nerve cell, computer illustration — Stock Photo
    Nerve cell, computer illustration
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface. — Stock Photo
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface.
    Illustration of a cancer cell. — Stock Photo
    Illustration of a cancer cell.
    Brain neural network, computer illustration. — Stock Photo
    Brain neural network, computer illustration.
    Cancer cell morphology — Stock Photo
    Cancer cell morphology
    Osteoclast cell structure — Stock Photo
    Osteoclast cell structure
    Scanning electron micrograph of PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph of PC12 neurone in culture.
    Abstract animal cell on blue background, digital illustration. — Stock Photo
    Abstract animal cell on blue background, digital illustration.
    Digital illustration of hypochromic and microcytic red blood cells while iron deficiency anaemia. — Stock Photo
    Digital illustration of hypochromic and microcytic red blood cells while iron deficiency anaemia.
    Thyroid gland cancer with closeup view of cancer cells, computer illustration. — Stock Photo
    Thyroid gland cancer with closeup view of cancer cells, computer illustration.
    Common house dust mite — Stock Photo
    Common house dust mite
    Structure and shape of basophil — Stock Photo
    Structure and shape of basophil
    Tuberculosis bacteria, 3d illustration. — Stock Photo
    Tuberculosis bacteria, 3d illustration.
    Visual rendering of Sleeping sickness — Stock Photo
    Visual rendering of Sleeping sickness
    Biotechnology engineer inspecting cell culture flask. — Stock Photo
    Biotechnology engineer inspecting cell culture flask.
    Antibodies attacking cancer cell, computer illustration — Stock Photo
    Antibodies attacking cancer cell, computer illustration
    Healthy human sperm cells — Stock Photo
    Healthy human sperm cells
    Cancer cell spreading, digital illustration. — Stock Photo
    Cancer cell spreading, digital illustration.
    Digital illustration showing abundant lymphoblast cells in human blood in acute lymphoblastic leukaemia. — Stock Photo
    Digital illustration showing abundant lymphoblast cells in human blood in acute lymphoblastic leukaemia.
    Trichomonas vaginalis causing trichomoniasis and neutrophils, digital illustration. — Stock Photo
    Trichomonas vaginalis causing trichomoniasis and neutrophils, digital illustration.
    Red blood cells — Stock Photo
    Red blood cells
    Antibodies attacking cancer cell, computer illustration — Stock Photo
    Antibodies attacking cancer cell, computer illustration
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).