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    Light micrograph of red blood cells (erythrocytes, red) in a blood vessel. — Stock Photo
    Light micrograph of red blood cells (erythrocytes, red) in a blood vessel.
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Coloured scanning electron micrograph (SEM) of a human red blood cell (erythrocyte, red) and a white blood cell (leucoocyte, blue). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a human red blood cell (erythrocyte, red) and a white blood cell (leucoocyte, blue).
    Midrib of a tea leaf — Stock Photo
    Midrib of a tea leaf
    Fractured pancreas tissue — Stock Photo
    Fractured pancreas tissue
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Fatcells structure and anatomy — Stock Photo
    Fatcells structure and anatomy
    Coloured scanning electron micrograph (SEM) of a section through a foetal vein filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a foetal vein filled with red blood cells (erythrocytes, red).
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans. — Stock Photo
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans.
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    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.
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Dog hair, coloured scanning electron micrograph (SEM). — Stock Photo
    Dog hair, coloured scanning electron micrograph (SEM).
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red).
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Myelinated nerve fibres — Stock Photo
    Myelinated nerve fibres
    Purkinje cells and their dendritic processes — Stock Photo
    Purkinje cells and their dendritic processes
    Hyaline cartilage, a semi-rigid connective tissue — Stock Photo
    Hyaline cartilage, a semi-rigid connective tissue
    Cilia covering the epithelial lining of the nasopharyx — Stock Photo
    Cilia covering the epithelial lining of the nasopharyx
    Section through the cerebellum in the brain — Stock Photo
    Section through the cerebellum in the brain
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Cilia covering the epithelial lining of the nasopharyx — Stock Photo
    Cilia covering the epithelial lining of the nasopharyx
    Fatcells structure and anatomy — Stock Photo
    Fatcells structure and anatomy
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Fat cells and supportive connective tissue — Stock Photo
    Fat cells and supportive connective tissue
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Colon lining and mucous producing cells — Stock Photo
    Colon lining and mucous producing cells
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Myelinated nerve fibres — Stock Photo
    Myelinated nerve fibres
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Visual rendering of Cells — Stock Photo
    Visual rendering of Cells
    Antibody molecular structure — Stock Photo
    Antibody molecular structure
    Purkinje cells and their dendritic processes — Stock Photo
    Purkinje cells and their dendritic processes
    Cell layers of the retina — Stock Photo
    Cell layers of the retina
    External mineralised structures of coccolithophores — Stock Photo
    External mineralised structures of coccolithophores
    Nerve cells and nerve network — Stock Photo
    Nerve cells and nerve network
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Fractured pancreas tissue — Stock Photo
    Fractured pancreas tissue
    Myelinated nerve fibres — Stock Photo
    Myelinated nerve fibres
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Pathological anatomy of atherosclerosis — Stock Photo
    Pathological anatomy of atherosclerosis
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Organelles of an eukaryotic cell — Stock Photo
    Organelles of an eukaryotic cell
    Daisy pollen grain — Stock Photo
    Daisy pollen grain
    Geranium pollen grain — Stock Photo
    Geranium pollen grain
    Clematis montana pollen — Stock Photo
    Clematis montana pollen
    Cancer cell morphology — Stock Photo
    Cancer cell morphology
    Cancer cell attacked by T cell — Stock Photo
    Cancer cell attacked by T cell
    Cancer cells and blood vessels — Stock Photo
    Cancer cells and blood vessels
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation