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    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells — Stock Photo
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells
    Bacillus bacteria shape — Stock Photo
    Bacillus bacteria shape
    Staphylococcus epidermidis bacteria — Stock Photo
    Staphylococcus epidermidis bacteria
    Scientist viewing bacteria cultures — Stock Photo
    Scientist viewing bacteria cultures
    Neurone embedded in grey matter — Stock Photo
    Neurone embedded in grey matter
    Human intestinal villi, computer illustration. — Stock Photo
    Human intestinal villi, computer illustration.
    Colored scanning electron micrograph of cancellous bone tissue from starling bird skull. — Stock Photo
    Colored scanning electron micrograph of cancellous bone tissue from starling bird skull.
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen. — Stock Photo
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen.
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree. — Stock Photo
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Researcher holding a petri dish — Stock Photo
    Researcher holding a petri dish
    Striated muscle. Coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding-pattern of the muscle fibrils is seen — Stock Photo
    Striated muscle. Coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding-pattern of the muscle fibrils is seen
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Human microbiome, computer illustration — Stock Photo
    Human microbiome, computer illustration
    Human oesophagus wall — Stock Photo
    Human oesophagus wall
    Human intestinal villi, computer illustration. — Stock Photo
    Human intestinal villi, computer illustration.
    Medical illustration of human cell structure on dark background. — Stock Photo
    Medical illustration of human cell structure on dark background.
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa. — Stock Photo
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa.
    Intestinal villi, computer illustration — Stock Photo
    Intestinal villi, computer illustration
    Light micrograph of hepatic hemosiderosis. Hemosiderosis is a form of iron overload disorder resulting in the accumulation of hemosiderin. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of hepatic hemosiderosis. Hemosiderosis is a form of iron overload disorder resulting in the accumulation of hemosiderin. Haematoxylin and eosin stain.
    Plasma cell, computer illustration. Plasma cells, which are found in the blood and lymph, are mature B lymphocytes (white blood cells) that produce and secrete antibodies during an immune response. — Stock Photo
    Plasma cell, computer illustration. Plasma cells, which are found in the blood and lymph, are mature B lymphocytes (white blood cells) that produce and secrete antibodies during an immune response.
    Rod-shaped Bacteria — Stock Photo
    Rod-shaped Bacteria
    Haversian canals in compact bone, light micrograph. — Stock Photo
    Haversian canals in compact bone, light micrograph.
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs — Stock Photo
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs
    Ovarian cancer cells, coloured scanning electron micrograph. — Stock Photo
    Ovarian cancer cells, coloured scanning electron micrograph.
    Acetic acid bacteria — Stock Photo
    Acetic acid bacteria
    Simple squamous epithelium, digital illustration. — Stock Photo
    Simple squamous epithelium, digital illustration.
    Simple cuboidal epithelium, digital illustration. — Stock Photo
    Simple cuboidal epithelium, digital illustration.
    Light micrograph of an artery vascular cross section. — Stock Photo
    Light micrograph of an artery vascular cross section.
    Light micrograph of a cross section of human cartilage and bone. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of a cross section of human cartilage and bone. Haematoxylin and eosin stain.
    Purkinje cell of brain cerebellum, digital illustration. — Stock Photo
    Purkinje cell of brain cerebellum, digital illustration.
    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).
    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.
    Human intestinal villi, computer illustration. — Stock Photo
    Human intestinal villi, computer illustration.
    Areolar connective tissue, light micrograph. — Stock Photo
    Areolar connective tissue, light micrograph.
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Section through the cerebellum of the brain — Stock Photo
    Section through the cerebellum of the brain
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Medical illustration of intestinal villi in human intestine. — Stock Photo
    Medical illustration of intestinal villi in human intestine.
    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
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells — Stock Photo
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain.
    Pneumonia. X-ray of the chest of a patient with bacterial pneumonia (grainy white area, lower left) in the lower lobe of the right lung (left). — Stock Photo
    Pneumonia. X-ray of the chest of a patient with bacterial pneumonia (grainy white area, lower left) in the lower lobe of the right lung (left).
    Bacterial contamination tests — Stock Photo
    Bacterial contamination tests
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    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.
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Colored scanning electron micrograph of cancellous bone tissue from starling bird skull. — Stock Photo
    Colored scanning electron micrograph of cancellous bone tissue from starling bird skull.
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    Taste buds. Coloured light micrograph of a section through the tongue, showing taste buds (round, purple). The taste buds are within papillae (projections) located on the surface of the tongue — Stock Photo
    Taste buds. Coloured light micrograph of a section through the tongue, showing taste buds (round, purple). The taste buds are within papillae (projections) located on the surface of the tongue
    Coloured scanning electron micrograph of bacteria on surface of human tongue. — Stock Photo
    Coloured scanning electron micrograph of bacteria on surface of human tongue.
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain.
    Medical artwork showing intestinal villi in bowel. — Stock Photo
    Medical artwork showing intestinal villi in bowel.
    Human compact bone tissue, light micrograph. — Stock Photo
    Human compact bone tissue, light micrograph.
    Bacteria Erysipelothrix rhusiopathiae — Stock Photo
    Bacteria Erysipelothrix rhusiopathiae