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    Human cardiac muscle, light micrograph. — Stock Photo
    Human cardiac muscle, light micrograph.
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Human intestinal villi, computer illustration. — Stock Photo
    Human intestinal villi, computer illustration.
    Cross-section of human scalp tissue, light micrograph. — Stock Photo
    Cross-section of human scalp tissue, light micrograph.
    Medical illustration of intestinal villi in human intestine. — Stock Photo
    Medical illustration of intestinal villi in human intestine.
    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.
    Immature parasitic trematode — Stock Photo
    Immature parasitic trematode
    Medical artwork of healthy intestinal villi in digestive system. — Stock Photo
    Medical artwork of healthy intestinal villi in digestive system.
    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).
    Acute pyelonephritis, computer illustration and light micrograph — Stock Photo
    Acute pyelonephritis, computer illustration and light micrograph
    Cancellous Bone tissue — Stock Photo
    Cancellous Bone tissue
    Human brain with close-up view of neurons, computer illustration. — Stock Photo
    Human brain with close-up view of neurons, computer illustration.
    Cancellous Bone tissue — Stock Photo
    Cancellous Bone tissue
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Legionella pneumophila bacteria — Stock Photo
    Legionella pneumophila bacteria
    Dental plaque scanning electron micrograph — Stock Photo
    Dental plaque scanning electron micrograph
    Lungs cancer, digital illustration showing malignant tumour in lung. — Stock Photo
    Lungs cancer, digital illustration showing malignant tumour in lung.
    Areolar connective tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Areolar connective tissue, light micrograph. Haematoxylin and eosin stain.
    Structure of compact bone, light micrograph. — Stock Photo
    Structure of compact bone, light micrograph.
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung — Stock Photo
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Bacteria found in a sample of human faeces — Stock Photo
    Bacteria found in a sample of human faeces
    Coloured scanning electron micrograph of ovarian cancer cells. — Stock Photo
    Coloured scanning electron micrograph of ovarian cancer cells.
    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
    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
    Acetic acid bacteria — Stock Photo
    Acetic acid bacteria
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease — Stock Photo
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease
    Microvilli from the small intestine — Stock Photo
    Microvilli from the small intestine
    Neisseria gonorrhoeae bacterium — Stock Photo
    Neisseria gonorrhoeae bacterium
    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.
    High power light micrograph (LM) of a section through the gills of a mushroom, Agaricus sp. (formerly Psalliota sp.). — Stock Photo
    High power light micrograph (LM) of a section through the gills of a mushroom, Agaricus sp. (formerly Psalliota sp.).
    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
    Developing pig eye — Stock Photo
    Developing pig eye
    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 white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Thyroid gland showing the follicles — Stock Photo
    Thyroid gland showing the follicles
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human cardiac muscle, light micrograph. Haematoxylin and eosin stain.
    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.
    Bacteria forming Dental plaque — Stock Photo
    Bacteria forming Dental plaque
    Acute pyelonephritis, computer illustration and light micrograph — Stock Photo
    Acute pyelonephritis, computer illustration and light micrograph
    Medical artwork showing intestinal villi in bowel. — Stock Photo
    Medical artwork showing intestinal villi in bowel.
    Cross-section of spinal cord, light micrograph. — Stock Photo
    Cross-section of spinal cord, light micrograph.
    Structure of islet of langerhans, light micrograph. — Stock Photo
    Structure of islet of langerhans, light micrograph.
    Digital illustration of human cilia cells. — Stock Photo
    Digital illustration of human cilia cells.
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter — Stock Photo
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter
    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.
    Human hair shafts, computer illustration — Stock Photo
    Human hair shafts, computer illustration
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut — Stock Photo
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut
    Colony of Listeria sp. bacteria — Stock Photo
    Colony of Listeria sp. bacteria
    Digital illustration of human cilia cells. — Stock Photo
    Digital illustration of human cilia cells.
    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 artwork of healthy intestinal villi in digestive system. — Stock Photo
    Medical artwork of healthy intestinal villi in digestive system.
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph. — Stock Photo
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph.
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Lymph node in tuberculosis — Stock Photo
    Lymph node in tuberculosis
    Ovarian cancer cells, coloured scanning electron micrograph. — Stock Photo
    Ovarian cancer cells, coloured scanning electron micrograph.