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    Hepatic bile duct infected with cocidian protozoa — Stock Photo
    Hepatic bile duct infected with cocidian protozoa
    Platelets in blood vessel — Stock Photo
    Platelets in blood vessel
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Conceptual illustration of chicken eggs in carton and magnification of bacteria of food-borne infection on white background. — Stock Photo
    Conceptual illustration of chicken eggs in carton and magnification of bacteria of food-borne infection on white background.
    Female teacher and girl student conducting scientific experiment at microscope in laboratory — Stock Photo
    Female teacher and girl student conducting scientific experiment at microscope in laboratory
    Cat flea head — Stock Photo
    Cat flea head
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Illustration of human egg cell on blue background. — Stock Photo
    Illustration of human egg cell on blue background.
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Front view of orange fluffy flying incest with brown antennae and ornamental large eyes — Stock Photo
    Front view of orange fluffy flying incest with brown antennae and ornamental large eyes
    Boy holding guinea pig in vet examination — Stock Photo
    Boy holding guinea pig in vet examination
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea
    Puffball fungus spores — Stock Photo
    Puffball fungus spores
    Jeweler wearing headband magnifier working in workshop — Stock Photo
    Jeweler wearing headband magnifier working in workshop
    Illustration of dividing human egg cell. — Stock Photo
    Illustration of dividing human egg cell.
    Agriculture - Melon fly (Dacus cucurbitae) adult on a leaf. — Stock Photo
    Agriculture - Melon fly (Dacus cucurbitae) adult on a leaf.
    Testicular cancer or teratoma — Stock Photo
    Testicular cancer or teratoma
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Closeup yellow flying wasp folding legs and looking at camera with big green eyes — Stock Photo
    Closeup yellow flying wasp folding legs and looking at camera with big green eyes
    Escherichia coli bacteria on gecko tongue — Stock Photo
    Escherichia coli bacteria on gecko tongue
    Closeup of magnified yellow striped eyes on head of exotic fly — Stock Photo
    Closeup of magnified yellow striped eyes on head of exotic fly
    College students using microscope conducting scientific experiment in laboratory — Stock Photo
    College students using microscope conducting scientific experiment in laboratory
    Illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Illustration of cancer cell being attacked by white blood cells.
    Man with opera glasses laughing in theater audience — Stock Photo
    Man with opera glasses laughing in theater audience
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Coloured scanning electron micrograph (SEM) of sensory hair cells in the cochlea of the inner ear. — Stock Photo
    Coloured scanning electron micrograph (SEM) of sensory hair cells in the cochlea of the inner ear.
    Structure of islet of langerhans, light micrograph. — Stock Photo
    Structure of islet of langerhans, light micrograph.
    Businessman looking at globe with magnifying glass — Stock Photo
    Businessman looking at globe with magnifying glass
    Cropped view of engineer using stereo microscope for inspecting printed circuit board. — Stock Photo
    Cropped view of engineer using stereo microscope for inspecting printed circuit board.
    Closeup of magnified grey fluffy head of flying insect with round convex rainbow eye — Stock Photo
    Closeup of magnified grey fluffy head of flying insect with round convex rainbow eye
    Tendon, coloured scanning electron micrograph (SEM), showing bundles of collagen fibres. The parallel alignment of the fibres make tendons inelastic but flexible. Tendons attach muscle to bone. Magnification: x5000 when printed at 10 centimetres wide — Stock Photo
    Tendon, coloured scanning electron micrograph (SEM), showing bundles of collagen fibres. The parallel alignment of the fibres make tendons inelastic but flexible. Tendons attach muscle to bone. Magnification: x5000 when printed at 10 centimetres wide
    Section of a muscular artery — Stock Photo
    Section of a muscular artery
    Lung cancer cells — Stock Photo
    Lung cancer cells
    Colored illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Colored illustration of cancer cell being attacked by white blood cells.
    Male doctor examining young woman using magnification lamp. — Stock Photo
    Male doctor examining young woman using magnification lamp.
    Girl student using microscope in classroom — Stock Photo
    Girl student using microscope in classroom
    Lactating breast tissue — Stock Photo
    Lactating breast tissue
    Engineer using stereo microscope for inspecting printed circuit board during quality control process. — Stock Photo
    Engineer using stereo microscope for inspecting printed circuit board during quality control process.
    Acrospaera radiolarian shell — Stock Photo
    Acrospaera radiolarian shell
    Illustration of Lactobacillus colony — Stock Photo
    Illustration of Lactobacillus colony
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan.
    Illustration of unfertilized human egg cell. — Stock Photo
    Illustration of unfertilized human egg cell.
    Fractured flexor tendon — Stock Photo
    Fractured flexor tendon
    Puffball fungus spores — Stock Photo
    Puffball fungus spores
    Asparagus pollen grains — Stock Photo
    Asparagus pollen grains
    Breast with lobular carcinoma — Stock Photo
    Breast with lobular carcinoma
    House dust mites — Stock Photo
    House dust mites
    Immature parasitic trematode — Stock Photo
    Immature parasitic trematode
    Colored digital illustration of cancer cell. — Stock Photo
    Colored digital illustration of cancer cell.
    Illustration of transparent cancer cell on blue background. — Stock Photo
    Illustration of transparent cancer cell on blue background.
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Dog tapeworm head — Stock Photo
    Dog tapeworm head
    Side view of black glossy flying incest with threatening antennae large eyes and transparent wing — Stock Photo
    Side view of black glossy flying incest with threatening antennae large eyes and transparent wing
    Large eye of businessman behind magnifying glass — Stock Photo
    Large eye of businessman behind magnifying glass
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Digital artwork of white blood cells attacking illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking illuminated cancer cell.
    Lactating breast tissue — Stock Photo
    Lactating breast tissue
    Bluebottle fly foot — Stock Photo
    Bluebottle fly foot
    Illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Illustration of cancer cell being attacked by white blood cells.