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    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.
    Purkinje cell of brain cerebellum, digital illustration. — Stock Photo
    Purkinje cell of brain cerebellum, digital illustration.
    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Medical illustration of intestinal villi in human intestine. — Stock Photo
    Medical illustration of intestinal villi in human intestine.
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue. — Stock Photo
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue.
    Pseudomonas aeruginosa bacteria — Stock Photo
    Pseudomonas aeruginosa bacteria
    Methicillin-resistant Staphylococcus aureus bacteria — Stock Photo
    Methicillin-resistant Staphylococcus aureus bacteria
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Purkinje cell of brain cerebellum, digital illustration. — Stock Photo
    Purkinje cell of brain cerebellum, digital illustration.
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    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.
    Colony of Listeria sp. bacteria — Stock Photo
    Colony of Listeria sp. bacteria
    Red blood cells with fibrin — Stock Photo
    Red blood cells with fibrin
    Medical illustration of inflamed intestinal villi. — Stock Photo
    Medical illustration of inflamed intestinal villi.
    Tongue surface, light micrograph and computer illustration. — Stock Photo
    Tongue surface, light micrograph and computer illustration.
    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
    Coloured scanning electron micrograph of bacteria on surface of human tongue. — Stock Photo
    Coloured scanning electron micrograph of bacteria on surface of human tongue.
    Liver cirrhosis. Computer illustration and light micrograph of a section through a human liver with from primary biliary cirrhosis. Cirrhosis is a disease in which bands of fibrosis (internal scarring) break up the internal structure of the liver — Stock Photo
    Liver cirrhosis. Computer illustration and light micrograph of a section through a human liver with from primary biliary cirrhosis. Cirrhosis is a disease in which bands of fibrosis (internal scarring) break up the internal structure of the liver
    Light micrograph of a section through the liver of a patient with glycogenosis, or glycogen storage disease (GSD). GSD is a rare condition that changes the way the body uses and stores glycogen, a form of sugar or glucose. Haematoxylin and eosin stai — Stock Photo
    Light micrograph of a section through the liver of a patient with glycogenosis, or glycogen storage disease (GSD). GSD is a rare condition that changes the way the body uses and stores glycogen, a form of sugar or glucose. Haematoxylin and eosin stai
    Simple cuboidal epithelium, digital illustration. — Stock Photo
    Simple cuboidal epithelium, digital illustration.
    Researcher holding a petri dish — Stock Photo
    Researcher holding a petri dish
    Neisseria meningitidis bacteria — Stock Photo
    Neisseria meningitidis bacteria
    Toothbrush and green toothpaste, close-up. — Stock Photo
    Toothbrush and green toothpaste, close-up.
    Sciatic nerve showing a bundle of nerve fibres — Stock Photo
    Sciatic nerve showing a bundle of nerve fibres
    Medical artwork of healthy intestinal villi in digestive system. — Stock Photo
    Medical artwork of healthy intestinal villi in digestive system.
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    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.
    Medical artwork showing intestinal villi in bowel. — Stock Photo
    Medical artwork showing intestinal villi in bowel.
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons — Stock Photo
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons
    Light micrograph of cardiac callosity. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of cardiac callosity. Haematoxylin and eosin stain.
    Medical artwork of healthy intestinal villi in digestive system. — Stock Photo
    Medical artwork of healthy intestinal villi in digestive system.
    Sciatic nerve showing a bundle of nerve fibres — Stock Photo
    Sciatic nerve showing a bundle of nerve fibres
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept. — Stock Photo
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept.
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Acute pyelonephritis, computer illustration and light micrograph — Stock Photo
    Acute pyelonephritis, computer illustration and light micrograph
    Intestinal villi, computer illustration — Stock Photo
    Intestinal villi, computer illustration
    Structure of islet of langerhans, light micrograph. — Stock Photo
    Structure of islet of langerhans, light micrograph.
    Acetic acid bacteria — Stock Photo
    Acetic acid bacteria
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept. — Stock Photo
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept.
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Simple columnar epithelium, digital illustration. — Stock Photo
    Simple columnar epithelium, digital 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.
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    X-ray of the head and human brain in concept of neural connections and electrical pulses. — Stock Photo
    X-ray of the head and human brain in concept of neural connections and electrical pulses.
    Transitional epithelium in urinary bladder, digital illustration. — Stock Photo
    Transitional epithelium in urinary bladder, digital illustration.
    Coloured scanning electron micrograph of ovarian cancer cells. — Stock Photo
    Coloured scanning electron micrograph of ovarian cancer cells.
    Medical illustration of human cell structure on dark background. — Stock Photo
    Medical illustration of human cell structure on dark background.
    Bacteria forming a human head — Stock Photo
    Bacteria forming a human head
    Electron micrograph of dental plaque — Stock Photo
    Electron micrograph of dental plaque
    Areolar connective tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Areolar connective tissue, light micrograph. Haematoxylin and eosin stain.
    Human brain with close-up view of neurons, computer illustration. — Stock Photo
    Human brain with close-up view of neurons, computer illustration.
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons — Stock Photo
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons — Stock Photo
    Human brain with highlighted pons and neurons, illustration. Human brain with highlighted pons Varolii and close-up view of pyramidal neurons (nerve cells) located in pons
    Filiform papillae (cone-shaped) on the surface of the tongue. — Stock Photo
    Filiform papillae (cone-shaped) on the surface of the tongue.
    Dental plaque scanning electron micrograph — Stock Photo
    Dental plaque scanning electron micrograph
    Cross-section of spinal cord, light micrograph. — Stock Photo
    Cross-section of spinal cord, light micrograph.
    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.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Digital illustration of human cilia cells. — Stock Photo
    Digital illustration of human cilia cells.