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497 results

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    Italy, Cicada on tree — Stock Photo
    Italy, Cicada on tree
    Activated human macrophage — Stock Photo
    Activated human macrophage
    Common house dust mite — Stock Photo
    Common house dust mite
    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    Testicular cancer or teratoma — Stock Photo
    Testicular cancer or teratoma
    Eye test equipment in a laboratory — Stock Photo
    Eye test equipment in a laboratory
    Enterococcus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Enterococcus coccoid bacteria, colored scanning electron micrograph.
    Hoverfly head anatomy — Stock Photo
    Hoverfly head anatomy
    Boy standing by ocean looking through a telescope — Stock Photo
    Boy standing by ocean looking through a telescope
    Flu virus particle structure — Stock Photo
    Flu virus particle structure
    Human embryonic stem cells, digital illustration. — Stock Photo
    Human embryonic stem cells, digital illustration.
    Closeup of magnified yellow striped eye on head of exotic fly — Stock Photo
    Closeup of magnified yellow striped eye on head of exotic fly
    Arachnoidiscus sp. diatom algae — Stock Photo
    Arachnoidiscus sp. diatom algae
    Hair follicles of human skin — Stock Photo
    Hair follicles of human skin
    Transparent cells on grey background, digital illustration. — Stock Photo
    Transparent cells on grey background, digital illustration.
    Lactating breast tissue — Stock Photo
    Lactating breast tissue
    Illustration of 4 cell stage egg on black background. — Stock Photo
    Illustration of 4 cell stage egg on black background.
    Illustration of transparent cancer cell on blue background. — Stock Photo
    Illustration of transparent cancer cell on blue background.
    Enterococcus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Enterococcus coccoid bacteria, colored scanning electron micrograph.
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body — Stock Photo
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body
    Illustration of illuminated red human cancer cell. — Stock Photo
    Illustration of illuminated red human cancer cell.
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Flu virus particle structure — Stock Photo
    Flu virus particle structure
    Puffball fungus spores — Stock Photo
    Puffball fungus spores
    Illustration of sperm around human egg cell. — Stock Photo
    Illustration of sperm around human egg cell.
    Girl student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student using microscope, conducting scientific experiment in laboratory classroom
    Dust mite on skin surface — Stock Photo
    Dust mite on skin surface
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Electron micrograph of dental plaque — Stock Photo
    Electron micrograph of dental plaque
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Illustration of human egg cell on blue background. — Stock Photo
    Illustration of human egg cell on blue background.
    Illustration of human egg cell and sperm on blue background. — Stock Photo
    Illustration of human egg cell and sperm on blue background.
    Egg cells on white background, digital illustration. — Stock Photo
    Egg cells on white background, digital illustration.
    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
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    House dust mites — Stock Photo
    House dust mites
    Basal cell carcinoma — Stock Photo
    Basal cell carcinoma
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Digital artwork of white blood cells attacking green illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking green illuminated cancer cell.
    A cup coffee on a table with a milk jug, magnifying glass, string and flowers — Stock Photo
    A cup coffee on a table with a milk jug, magnifying glass, string and flowers
    Anemonefish eggs on seafloor — Stock Photo
    Anemonefish eggs on seafloor
    Adenocarcinoma of the thyroid gland — Stock Photo
    Adenocarcinoma of the thyroid gland
    Illustration of sperm fertilizing human egg cell. — Stock Photo
    Illustration of sperm fertilizing human egg cell.
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Puffball fungus spore — Stock Photo
    Puffball fungus spore
    Digital illustration of red migrating cancer cells. — Stock Photo
    Digital illustration of red migrating cancer cells.
    Male sex cell — Stock Photo
    Male sex cell
    Shell of a radiolarian — Stock Photo
    Shell of a radiolarian
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Closeup of magnified part of black and brown ant with glossy belly and legs — Stock Photo
    Closeup of magnified part of black and brown ant with glossy belly and legs
    Lychnocanoma radiolarian shell — Stock Photo
    Lychnocanoma radiolarian shell
    Illustration of pink human egg cell on black background. — Stock Photo
    Illustration of pink human egg cell on black background.
    Flu virus particle structure — Stock Photo
    Flu virus particle structure
    Section through bone marrow — Stock Photo
    Section through bone marrow
    Veterinarians examining dog in veterinary surgery — Stock Photo
    Veterinarians examining dog in veterinary surgery
    Ductal carcinoma of the breast — Stock Photo
    Ductal carcinoma of the breast
    Arachnoidiscus sp. diatom algae — Stock Photo
    Arachnoidiscus sp. diatom algae