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    Red blood cells — Stock Photo
    Red blood cells
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (blue) and jaws. Magnification: x50 when printed 10 centimetres wide. — Stock Photo
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (blue) and jaws. Magnification: x50 when printed 10 centimetres wide.
    Primula pollen grain — Stock Photo
    Primula pollen grain
    Liradiscus sp. planktonic unicellular algae — Stock Photo
    Liradiscus sp. planktonic unicellular algae
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Osteosarcoma cancer cell — Stock Photo
    Osteosarcoma cancer cell
    Bacillus megaterium bacterial colony, coloured scanning electron micrograph. — Stock Photo
    Bacillus megaterium bacterial colony, coloured scanning electron micrograph.
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum. — Stock Photo
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum.
    Shell of a radiolarian — Stock Photo
    Shell of a radiolarian
    Coloured scanning electron micrograph of cancer cells migrating down pores. — Stock Photo
    Coloured scanning electron micrograph of cancer cells migrating down pores.
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    Female copepod with eggs — Stock Photo
    Female copepod with eggs
    Blade of grass with a serrated edge — Stock Photo
    Blade of grass with a serrated edge
    Breast cancer cells growing in culture — Stock Photo
    Breast cancer cells growing in culture
    PC12 neurone in culture — Stock Photo
    PC12 neurone in culture
    Surface of the foot of a common pollen beetle — Stock Photo
    Surface of the foot of a common pollen beetle
    Radiolarians amoeboid protozoa — Stock Photo
    Radiolarians amoeboid protozoa
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Crenated red blood cells — Stock Photo
    Crenated red blood cells
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum. — Stock Photo
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum.
    Colored scanning electron micrograph showing urethral epithelium of urethra. — Stock Photo
    Colored scanning electron micrograph showing urethral epithelium of urethra.
    Colored scanning electron micrograph of osteosarcoma bone cancer cell. — Stock Photo
    Colored scanning electron micrograph of osteosarcoma bone cancer cell.
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats. They are predatory organism, feeding on other ciliate protozoans, mainly Paramecium — Stock Photo
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats. They are predatory organism, feeding on other ciliate protozoans, mainly Paramecium
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms. — Stock Photo
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms.
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Colored scanning electron micrograph of diatoms photosynthetic single-celled algae. — Stock Photo
    Colored scanning electron micrograph of diatoms photosynthetic single-celled algae.
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Morphology of Activated platelets — Stock Photo
    Morphology of Activated platelets
    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.
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze. — Stock Photo
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze.
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    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.
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Cells of brewer yeast — Stock Photo
    Cells of brewer yeast
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Allergenic pet dander on dog hair, colored scanning electron micrograph. — Stock Photo
    Allergenic pet dander on dog hair, colored scanning electron micrograph.
    Coloured scanning electron micrograph (SEM) of a fractured bile duct. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured bile duct.
    Ovarian cancer cells, coloured scanning electron micrograph. — Stock Photo
    Ovarian cancer cells, coloured scanning electron micrograph.
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake — Stock Photo
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (blue) and large intercellular air spaces (holes). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (blue) and large intercellular air spaces (holes).
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells — Stock Photo
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Crystalline lens of the eye — Stock Photo
    Crystalline lens of the eye
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae. — Stock Photo
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae.
    Caterpillar hairs. Coloured scanning electron micrograph (SEM) of hairs from the vapourer moth (Orgyia antiqua) caterpillar. — Stock Photo
    Caterpillar hairs. Coloured scanning electron micrograph (SEM) of hairs from the vapourer moth (Orgyia antiqua) caterpillar.
    Colorectal cancer cell dividing — Stock Photo
    Colorectal cancer cell dividing
    Male sex cell — Stock Photo
    Male sex cell
    Cotton bud with ear wax embedded in fibres, coloured scanning electron micrograph (SEM). — Stock Photo
    Cotton bud with ear wax embedded in fibres, coloured scanning electron micrograph (SEM).
    Cat flea. Coloured scanning electron micrograph (SEM) of a cat flea (Ctenocephalides felis). Its body is laterally-flattened to allow it to move easily through the fur of its cat host — Stock Photo
    Cat flea. Coloured scanning electron micrograph (SEM) of a cat flea (Ctenocephalides felis). Its body is laterally-flattened to allow it to move easily through the fur of its cat host
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Coloured scanning electron micrograph of tardigrade water bear. — Stock Photo
    Coloured scanning electron micrograph of tardigrade water bear.
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae. — Stock Photo
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae.
    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue. — Stock Photo
    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue.
    Dental plaque scanning electron micrograph — Stock Photo
    Dental plaque scanning electron micrograph
    Coloured scanning electron micrograph of ovarian cancer cells. — Stock Photo
    Coloured scanning electron micrograph of ovarian cancer cells.
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain