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    Old church in English countryside — Stock Photo
    Old church in English countryside
    Old church in English countryside — Stock Photo
    Old church in English countryside
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Acinar pancreatic cell — Stock Photo
    Acinar pancreatic cell
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Narrowed abdominal arteries, coloured angiogram - blood vessel X-ray . — Stock Photo
    Narrowed abdominal arteries, coloured angiogram - blood vessel X-ray .
    Human hair shafts, digital illustration. — Stock Photo
    Human hair shafts, digital illustration.
    House dust mites — Stock Photo
    House dust mites
    Human hair shafts, digital illustration. — Stock Photo
    Human hair shafts, digital illustration.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Thyroid gland showing the follicles — Stock Photo
    Thyroid gland showing the follicles
    Parotid salivary gland — Stock Photo
    Parotid salivary gland
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Crenated red blood cells — Stock Photo
    Crenated red blood cells
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Chest, neck and head arteries — Stock Photo
    Chest, neck and head arteries
    Breast cancer screening — Stock Photo
    Breast cancer screening
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Colored scanning electron micrograph of osteoblast osteocyte bone cell. — Stock Photo
    Colored scanning electron micrograph of osteoblast osteocyte bone cell.
    Cilia covering the epithelial lining of the nasopharyx — Stock Photo
    Cilia covering the epithelial lining of the nasopharyx
    Blastocyst hollow ball of cells with fluid, digital illustration. — Stock Photo
    Blastocyst hollow ball of cells with fluid, digital illustration.
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte. — Stock Photo
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte.
    Dental plaque scanning electron micrograph — Stock Photo
    Dental plaque scanning electron micrograph
    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.
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets. — Stock Photo
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets.
    Piece of cake with close-up of Staphylococcus bacteria, food poisoning conceptual illustration. — Stock Photo
    Piece of cake with close-up of Staphylococcus bacteria, food poisoning conceptual illustration.
    Coloured coronary angiogram (X-ray) of a 59 year old patient with severe stenosis (narrowing) in the left anterior interventricular coronary artery (running down left) and the left circumflex artery (centre). — Stock Photo
    Coloured coronary angiogram (X-ray) of a 59 year old patient with severe stenosis (narrowing) in the left anterior interventricular coronary artery (running down left) and the left circumflex artery (centre).
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Fractured arm, coloured X-ray. — Stock Photo
    Fractured arm, coloured X-ray.
    Fibrosarcoma cells in late stage of mitosis — Stock Photo
    Fibrosarcoma cells in late stage of mitosis
    Breast cancer screening — Stock Photo
    Breast cancer screening
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus. — Stock Photo
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus.
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Coiled proboscis of a moth — Stock Photo
    Coiled proboscis of a moth
    Brain with aneurysm in the middle cerebral artery — Stock Photo
    Brain with aneurysm in the middle cerebral artery
    Scanning electron micrograph of PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph of PC12 neurone in culture.
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Fly head anatomy — Stock Photo
    Fly head anatomy
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (pink) — Stock Photo
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (pink)
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Tumour affecting the pituitary gland — Stock Photo
    Tumour affecting the pituitary gland
    Axial computed tomography scan of chest showing cancerous tumor in lungs. — Stock Photo
    Axial computed tomography scan of chest showing cancerous tumor in lungs.
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (green) — Stock Photo
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (green)
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Knee of obese patient with arthritis — Stock Photo
    Knee of obese patient with arthritis
    Digital illustration of pollen grain on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grain on anther of Chinese hibiscus flower.
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Old church in English countryside — Stock Photo
    Old church in English countryside
    Tumour affecting the pituitary gland — Stock Photo
    Tumour affecting the pituitary gland
    Influenza viruses and host cell — Stock Photo
    Influenza viruses and host cell
    Blood clot structure — Stock Photo
    Blood clot structure
    Brain with aneurysm in the middle cerebral artery — Stock Photo
    Brain with aneurysm in the middle cerebral artery
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum