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    Doctors using x-ray machine to examining patient in hospital — Stock Photo
    Doctors using x-ray machine to examining patient in hospital
    Scanning electron micrograph of bacteria cultured from sample of human faeces. — Stock Photo
    Scanning electron micrograph of bacteria cultured from sample of human faeces.
    Coloured scanning electron micrograph of breast cancer cell. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cell.
    Scanning electron microscopy of DNA molecules and red and white blood cells. — Stock Photo
    Scanning electron microscopy of DNA molecules and red and white blood cells.
    Asparagus pollen grains — Stock Photo
    Asparagus pollen grains
    Human red blood cells — Stock Photo
    Human red blood cells
    B-lymphocyte white blood cells — Stock Photo
    B-lymphocyte white blood cells
    Portrait of smiling doctor standing in x-ray room at hospital — Stock Photo
    Portrait of smiling doctor standing in x-ray room at hospital
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface.
    Hyaline cartilage, a semi-rigid connective tissue — Stock Photo
    Hyaline cartilage, a semi-rigid connective tissue
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Colored scanning electron micrograph of pollen grains from marigold flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from marigold flower.
    Mosquito head anatomy — Stock Photo
    Mosquito head anatomy
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Doctors talking to patient before mri scanning test at hospital — Stock Photo
    Doctors talking to patient before mri scanning test at hospital
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Collagen bundles from the delicate connective tissue — Stock Photo
    Collagen bundles from the delicate connective tissue
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood — Stock Photo
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female — Stock Photo
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (grey) and large intercellular air spaces (holes). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (grey) and large intercellular air spaces (holes).
    Airport security officer using a hand held metal detector to check a commuter in airport — Stock Photo
    Airport security officer using a hand held metal detector to check a commuter in airport
    Coloured scanning electron micrograph (SEM) of Cotton t-shirt collar with dirt, dead skin, etc. embedded in fibres. — Stock Photo
    Coloured scanning electron micrograph (SEM) of Cotton t-shirt collar with dirt, dead skin, etc. embedded in fibres.
    Colored scanning electron micrograph of shelled amoebae, single-celled protozoan organisms. — Stock Photo
    Colored scanning electron micrograph of shelled amoebae, single-celled protozoan organisms.
    Asparagus beetle head — Stock Photo
    Asparagus beetle head
    Coloured scanning electron micrograph (SEM) of rods (yellow) and cones (green) in the retina of the eye. — Stock Photo
    Coloured scanning electron micrograph (SEM) of rods (yellow) and cones (green) in the retina of the eye.
    Fractured bladder stone — Stock Photo
    Fractured bladder stone
    Scanning electron micrograph of head of pork tapeworm intestinal parasite. — Stock Photo
    Scanning electron micrograph of head of pork tapeworm intestinal parasite.
    Colored scanning electron micrograph of white blood cells and single platelet. — Stock Photo
    Colored scanning electron micrograph of white blood cells and single platelet.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Sales assistant using a digital device to check products — Stock Photo
    Sales assistant using a digital device to check products
    Human red blood cells and platelets — Stock Photo
    Human red blood cells and platelets
    PC12 neurone in culture — Stock Photo
    PC12 neurone in culture
    Dividing prostate cancer cells, coloured scanning electron micrograph. — Stock Photo
    Dividing prostate cancer cells, coloured scanning electron micrograph.
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    Radiologist talking to patient in CT scanner. — Stock Photo
    Radiologist talking to patient in CT scanner.
    Wasp eye numerous lenses — Stock Photo
    Wasp eye numerous lenses
    Cat flea head — Stock Photo
    Cat flea head
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats — Stock Photo
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats
    Truck driver worker scanning pallet of cardboard boxes at distribution warehouse loading dock — Stock Photo
    Truck driver worker scanning pallet of cardboard boxes at distribution warehouse loading dock
    Lactating breast tissue — Stock Photo
    Lactating breast tissue
    Activated T lymphocytes and red blood cells on scanning electron micrograph. — Stock Photo
    Activated T lymphocytes and red blood cells on scanning electron micrograph.
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Prostate cancer cells, coloured scanning electron micrograph. — Stock Photo
    Prostate cancer cells, coloured scanning electron micrograph.
    Scanning electron micrograph of bacterial culture from sputum. — Stock Photo
    Scanning electron micrograph of bacterial culture from sputum.
    Staphylococcus bacteria cluster — Stock Photo
    Staphylococcus bacteria cluster
    Human eyelash mites — Stock Photo
    Human eyelash mites
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells — Stock Photo
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells
    Colored scanning electron micrograph of stem cell-derived motor neuron cell. — Stock Photo
    Colored scanning electron micrograph of stem cell-derived motor neuron cell.
    Primula pollen grain — Stock Photo
    Primula pollen grain
    Pseudomonas aeruginosa bacteria — Stock Photo
    Pseudomonas aeruginosa bacteria
    Customer service representative scanning smart phone QR code at airport check-in counter — Stock Photo
    Customer service representative scanning smart phone QR code at airport check-in counter
    Caenorhabditis elegans parasite worm, colored scanning electron micrograph. — Stock Photo
    Caenorhabditis elegans parasite worm, colored scanning electron micrograph.
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Albumen crystals, coloured scanning electron micrograph (SEM). — Stock Photo
    Albumen crystals, coloured scanning electron micrograph (SEM).
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres. — Stock Photo
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres.
    Airport security officer using a hand held metal detector to check a passenger in airport — Stock Photo
    Airport security officer using a hand held metal detector to check a passenger in airport
    Electron micrograph of dental plaque — Stock Photo
    Electron micrograph of dental plaque
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Coloured scanning electron micrograph (SEM) of a fracture through the thyroid gland revealing several follicles (yellow). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fracture through the thyroid gland revealing several follicles (yellow).