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497 results

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    Asparagus pollen grains — Stock Photo
    Asparagus pollen grains
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Closeup of magnified grey head of flying insect with round convex green eyes — Stock Photo
    Closeup of magnified grey head of flying insect with round convex green eyes
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Hepatic bile duct infected with cocidian protozoa — Stock Photo
    Hepatic bile duct infected with cocidian protozoa
    Girl student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student using microscope, conducting scientific experiment in laboratory classroom
    Digital artwork of white blood cells attacking green illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking green illuminated cancer cell.
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Chinese children holding magnifying glass in museum — Stock Photo
    Chinese children holding magnifying glass in museum
    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
    Young female scientist viewing microscope during research. — Stock Photo
    Young female scientist viewing microscope during research.
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Giant cell tumour of the bone — Stock Photo
    Giant cell tumour of the bone
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Fibroblast cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Fibroblast cell, coloured scanning electron micrograph (SEM).
    Illustration of sperm around human egg cell. — Stock Photo
    Illustration of sperm around human egg cell.
    Colored digital illustration of green cancer cells. — Stock Photo
    Colored digital illustration of green cancer cells.
    Bluebottle fly foot — Stock Photo
    Bluebottle fly foot
    Hoverfly head anatomy — Stock Photo
    Hoverfly head anatomy
    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
    Cashmere wool fibres, coloured scanning electron micrograph (SEM). — Stock Photo
    Cashmere wool fibres, coloured scanning electron micrograph (SEM).
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Activated platelet from peripheral blood — Stock Photo
    Activated platelet from peripheral blood
    Illustration of illuminated cancer cells on black background. — Stock Photo
    Illustration of illuminated cancer cells on black background.
    Asparagus pollen grains — Stock Photo
    Asparagus pollen grains
    Red blood cells — Stock Photo
    Red blood cells
    Illustration of fertilized human egg cell. — Stock Photo
    Illustration of fertilized human egg cell.
    Human blood cells — Stock Photo
    Human blood cells
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    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.
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Adenocarcinoma of the thyroid gland — Stock Photo
    Adenocarcinoma of the thyroid gland
    Illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Illustration of cancer cell being attacked by white blood cells.
    Bacteriastrum sp. diatom algae — Stock Photo
    Bacteriastrum sp. diatom algae
    Secondary follicles in an ovary — Stock Photo
    Secondary follicles in an ovary
    Illustration of dividing human egg cell. — Stock Photo
    Illustration of dividing human egg cell.
    Campylodiscus fastuosus diatom — Stock Photo
    Campylodiscus fastuosus diatom
    Colored digital illustration of cancer cells. — Stock Photo
    Colored digital illustration of cancer cells.
    Woman looking through spotting scope, Wyoming, USA — Stock Photo
    Woman looking through spotting scope, Wyoming, USA
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Colored digital illustration of green cancer cell. — Stock Photo
    Colored digital illustration of green cancer cell.
    Colored digital illustration of green cancer cell. — Stock Photo
    Colored digital illustration of green cancer cell.
    Enterococcus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Enterococcus coccoid bacteria, colored scanning electron micrograph.
    Wilms tumour of the kidney — Stock Photo
    Wilms tumour of the kidney
    Illustration of human egg cell on blue background. — Stock Photo
    Illustration of human egg cell on blue background.
    Eupodiscus sculptus diatom — Stock Photo
    Eupodiscus sculptus diatom
    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.
    Dense connective tissue, coloured scanning electron micrograph (SEM). — Stock Photo
    Dense connective tissue, coloured scanning electron micrograph (SEM).
    Close up profile girl student using microscope, conducting scientific experiment — Stock Photo
    Close up profile girl student using microscope, conducting scientific experiment
    Radiolarians amoeboid protozoa — Stock Photo
    Radiolarians amoeboid protozoa
    Eye test equipment in a laboratory — Stock Photo
    Eye test equipment in a laboratory
    Side view of orange fluffy flying incest with brown antennae and ornamental large eye — Stock Photo
    Side view of orange fluffy flying incest with brown antennae and ornamental large eye
    Dead bluebottle fly — Stock Photo
    Dead bluebottle fly
    Egg cells on white background, digital illustration. — Stock Photo
    Egg cells on white background, digital illustration.
    Digital artwork of illuminated red human cancer cell. — Stock Photo
    Digital artwork of illuminated red human cancer cell.
    Closeup magnified part of black and brown ant with glossy head and legs — Stock Photo
    Closeup magnified part of black and brown ant with glossy head and legs
    Activated human macrophage — Stock Photo
    Activated human macrophage
    Triceratium sp. diatom algae — Stock Photo
    Triceratium sp. diatom algae
    Digital illustration of red cancer cells, full frame. — Stock Photo
    Digital illustration of red cancer cells, full frame.
    Illustration of illuminated green cancer cell on black background. — Stock Photo
    Illustration of illuminated green cancer cell on black background.