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    Scanning electron micrograph of dermestid beetle head. — Stock Photo
    Scanning electron micrograph of dermestid beetle head.
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Colored scanning electron micrograph of scales from silverfish insect living fossil. — Stock Photo
    Colored scanning electron micrograph of scales from silverfish insect living fossil.
    Lymphoma cancer cell — Stock Photo
    Lymphoma cancer cell
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Coloured transmission electron micrograph (TEM) of a transverse section through an artery. — Stock Photo
    Coloured transmission electron micrograph (TEM) of a transverse section through an artery.
    Copepod, coloured scanning electron micrograph (SEM). — Stock Photo
    Copepod, coloured scanning electron micrograph (SEM).
    Asparagus beetle head — Stock Photo
    Asparagus beetle head
    Scorpion fly foot — Stock Photo
    Scorpion fly foot
    Nanostructures formed on nickel surface — Stock Photo
    Nanostructures formed on nickel surface
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Cat flea head — Stock Photo
    Cat flea head
    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
    Komodo dragon skin, coloured scanning electron micrograph (SEM). The Komodo dragon (Varanus komodoensis) has armoured scaly skin. It is the largest lizard in the world, reaching over three metres in length — Stock Photo
    Komodo dragon skin, coloured scanning electron micrograph (SEM). The Komodo dragon (Varanus komodoensis) has armoured scaly skin. It is the largest lizard in the world, reaching over three metres in length
    Pancreatic islet cells. Colored transmission electron micrograph (TEM) of a section through pancreas tissue, showing cells known as Islets of Langerhans. These cells occur in distinct ovoid clusters numbering about 1 million in humans — Stock Photo
    Pancreatic islet cells. Colored transmission electron micrograph (TEM) of a section through pancreas tissue, showing cells known as Islets of Langerhans. These cells occur in distinct ovoid clusters numbering about 1 million in humans
    Climbing lily pollen — Stock Photo
    Climbing lily pollen
    Microvilli of gallbladder surface — Stock Photo
    Microvilli of gallbladder surface
    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans — Stock Photo
    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans
    Cardiac muscle from a healthy heart — Stock Photo
    Cardiac muscle from a healthy heart
    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
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Heart strings strings — Stock Photo
    Heart strings strings
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Coloured scanning electron micrograph of cancer cells from colon. — Stock Photo
    Coloured scanning electron micrograph of cancer cells from colon.
    Contemporary professional microscope with powerful lenses placed on table in modern equipped lab — Stock Photo
    Contemporary professional microscope with powerful lenses placed on table in modern equipped lab
    Abutilon sp. pollen grain — Stock Photo
    Abutilon sp. pollen grain
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Fly head anatomy — Stock Photo
    Fly head anatomy
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Fungal cells with sporangia and spores — Stock Photo
    Fungal cells with sporangia and spores
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Fungal cells with sporangia and spores — Stock Photo
    Fungal cells with sporangia and spores
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Bird bone tissue — Stock Photo
    Bird bone tissue
    Hyaline cartilage, a semi-rigid connective tissue — Stock Photo
    Hyaline cartilage, a semi-rigid connective tissue
    Peripheral nerve. Black and white transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin (dark rings) is an insulating fatty layer that surrounds the myelinated nerve fibres — Stock Photo
    Peripheral nerve. Black and white transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin (dark rings) is an insulating fatty layer that surrounds the myelinated nerve fibres
    Leukaemia blood cells — Stock Photo
    Leukaemia blood cells
    Mobile phone speaker, colored scanning electron micrograph. — Stock Photo
    Mobile phone speaker, colored scanning electron micrograph.
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid — Stock Photo
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth. — Stock Photo
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth.
    Mycobacterium smegmatis bacteria — Stock Photo
    Mycobacterium smegmatis bacteria
    Pit formed on metal or semiconductor surface — Stock Photo
    Pit formed on metal or semiconductor surface
    Mobile phone speaker, colored scanning electron micrograph. — Stock Photo
    Mobile phone speaker, colored scanning electron micrograph.
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Cardiac muscle from a healthy heart — Stock Photo
    Cardiac muscle from a healthy heart
    Nanostructures formed on a titanium surface — Stock Photo
    Nanostructures formed on a titanium surface
    Colored scanning electron micrograph of bundles of sensory cilia cells in macula utriculi within labyrinth of human inner ear. — Stock Photo
    Colored scanning electron micrograph of bundles of sensory cilia cells in macula utriculi within labyrinth of human inner ear.
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission electron micrograph. — Stock Photo
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission electron micrograph.
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus — Stock Photo
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    Komodo dragon skin, coloured scanning electron micrograph (SEM). The Komodo dragon (Varanus komodoensis) has armoured scaly skin. It is the largest lizard in the world, reaching over three metres in length — Stock Photo
    Komodo dragon skin, coloured scanning electron micrograph (SEM). The Komodo dragon (Varanus komodoensis) has armoured scaly skin. It is the largest lizard in the world, reaching over three metres in length
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube