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    Toothbrush and green toothpaste, close-up. — Stock Photo
    Toothbrush and green toothpaste, close-up.
    Light micrograph (LM) of the nasal sinuses ( lined by brown epithelium ) and the supporting cartilages (pink). — Stock Photo
    Light micrograph (LM) of the nasal sinuses ( lined by brown epithelium ) and the supporting cartilages (pink).
    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.
    Section through the cerebellum of the brain — Stock Photo
    Section through the cerebellum of the brain
    Liver cirrhosis. Computer illustration and light micrograph of a section through a human liver with cirrhosis-associated hepatocellular nodules. — Stock Photo
    Liver cirrhosis. Computer illustration and light micrograph of a section through a human liver with cirrhosis-associated hepatocellular nodules.
    Bacterial contamination tests — Stock Photo
    Bacterial contamination tests
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue. — Stock Photo
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue.
    Acute pyelonephritis, computer illustration and light micrograph — Stock Photo
    Acute pyelonephritis, computer illustration and 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.
    Artwork of bacilli bacteria — Stock Photo
    Artwork of bacilli bacteria
    Broom stem. Light micrograph (LM) of transverse section through stem of common broom (Salicornia europaea) plant. Broom is drought plant (xerophyte) with ribbed stems and branches to increase area for photosynthesis — Stock Photo
    Broom stem. Light micrograph (LM) of transverse section through stem of common broom (Salicornia europaea) plant. Broom is drought plant (xerophyte) with ribbed stems and branches to increase area for photosynthesis
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality
    Human hair shafts, computer illustration — Stock Photo
    Human hair shafts, computer illustration
    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.
    Tonsilitis, light micrograph. Tonsilitis is the inflammation of the tonsils. Haematoxylin and eosin stain. — Stock Photo
    Tonsilitis, light micrograph. Tonsilitis is the inflammation of the tonsils. Haematoxylin and eosin stain.
    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.
    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
    Culturing anaerobic bacteria — Stock Photo
    Culturing anaerobic bacteria
    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
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    Human hair shafts, computer illustration — Stock Photo
    Human hair shafts, computer illustration
    Liver tissue, light micrograph. Animal tissue. — Stock Photo
    Liver tissue, light micrograph. Animal tissue.
    Structure of compact bone, light micrograph. — Stock Photo
    Structure of compact bone, light micrograph.
    Stratified cuboidal epithelium, digital illustration. — Stock Photo
    Stratified cuboidal epithelium, digital illustration.
    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
    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.
    Medical illustration of human cell structure on black background. — Stock Photo
    Medical illustration of human cell structure on black background.
    Human smooth muscle, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human smooth muscle, light micrograph. Haematoxylin and eosin stain.
    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.
    Acute pyelonephritis, computer illustration and light micrograph — Stock Photo
    Acute pyelonephritis, computer illustration and light micrograph
    Human hair shafts, computer illustration — Stock Photo
    Human hair shafts, computer illustration
    Human hair shafts, computer illustration — Stock Photo
    Human hair shafts, computer 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.
    Medical illustration of inflamed intestinal villi. — Stock Photo
    Medical illustration of inflamed intestinal villi.
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells — Stock Photo
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells
    Coloured scanning electron micrograph (SEM) of a section through a foetal olfactory (smelling) sense organ known as the vomeronasal organ (VNO), or Jacobson organ. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a foetal olfactory (smelling) sense organ known as the vomeronasal organ (VNO), or Jacobson organ.
    Neurone embedded in grey matter — Stock Photo
    Neurone embedded in grey matter
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs. — Stock Photo
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs.
    Pseudomonas aeruginosa bacteria — Stock Photo
    Pseudomonas aeruginosa bacteria
    Large thrombus formation — Stock Photo
    Large thrombus formation
    Intestinal villi, computer illustration — Stock Photo
    Intestinal villi, computer illustration
    Human brain with close-up view of neurons, computer illustration. — Stock Photo
    Human brain with close-up view of neurons, computer illustration.
    Gardnerella vaginalis bacteria — Stock Photo
    Gardnerella vaginalis bacteria
    Coloured scanning electron micrograph (SEM) of the inner lining of the stomach (gastric mucosa). — Stock Photo
    Coloured scanning electron micrograph (SEM) of the inner lining of the stomach (gastric mucosa).
    Crystalline lens of the eye — Stock Photo
    Crystalline lens of the eye
    Acinar pancreatic cell — Stock Photo
    Acinar pancreatic cell
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue. — Stock Photo
    Oesophageal cancer, computer illustration and light micrograph of cancer tissue.
    Medical illustration of intestinal villi in human intestine. — Stock Photo
    Medical illustration of intestinal villi in human intestine.
    Transitional epithelium in urinary bladder, digital illustration. — Stock Photo
    Transitional epithelium in urinary bladder, digital illustration.
    Lymph node in tuberculosis — Stock Photo
    Lymph node in tuberculosis
    Amyloid plaques amongst neurons — Stock Photo
    Amyloid plaques amongst neurons
    Medical illustration of healthy intestinal villi in gastrointestinal tract. — Stock Photo
    Medical illustration of healthy intestinal villi in gastrointestinal tract.
    Areolar connective tissue, light micrograph. — Stock Photo
    Areolar connective tissue, light micrograph.
    Human smooth muscle, light micrograph. — Stock Photo
    Human smooth muscle, light micrograph.
    Developing pig eye — Stock Photo
    Developing pig eye
    Human intestinal villi, computer illustration. — Stock Photo
    Human intestinal villi, computer illustration.
    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
    Oligodendrocyte cell structure — Stock Photo
    Oligodendrocyte cell structure
    Amyloid plaques amongst neurons — Stock Photo
    Amyloid plaques amongst neurons