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    Plaque-forming bacteria, colored scanning electron micrograph. — Stock Photo
    Plaque-forming bacteria, colored scanning electron micrograph.
    Fungal cells with sporangia and spores — Stock Photo
    Fungal cells with sporangia and spores
    Neutrophil cells. Coloured transmission electron micrograph (TEM) of human neutrophil cells. Neutrophils are involved in inflammatory responses to tissue damage, where they engulf and destroy microorganisms — Stock Photo
    Neutrophil cells. Coloured transmission electron micrograph (TEM) of human neutrophil cells. Neutrophils are involved in inflammatory responses to tissue damage, where they engulf and destroy microorganisms
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats — Stock Photo
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Male sex cell — Stock Photo
    Male sex cell
    Blood clot formation — Stock Photo
    Blood clot formation
    Fly larva head anatomy — Stock Photo
    Fly larva head anatomy
    Hyaline cartilage, a semi-rigid connective tissue — Stock Photo
    Hyaline cartilage, a semi-rigid connective tissue
    Coloured scanning electron micrograph of surface of prostate cancer cells. — Stock Photo
    Coloured scanning electron micrograph of surface of prostate cancer cells.
    Angel trumpets pollen — Stock Photo
    Angel trumpets pollen
    Fallopian tube, TEM — Stock Photo
    Fallopian tube, TEM
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Scorpion fly foot — Stock Photo
    Scorpion fly foot
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice — Stock Photo
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample. — Stock Photo
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample.
    Colored scanning electron micrograph of scales from silverfish insect living fossil. — Stock Photo
    Colored scanning electron micrograph of scales from silverfish insect living fossil.
    Colored scanning electron micrograph of osteosarcoma bone cancer cell. — Stock Photo
    Colored scanning electron micrograph of osteosarcoma bone cancer cell.
    Pancreatic cancer cells — Stock Photo
    Pancreatic cancer cells
    Red blood cells — Stock Photo
    Red blood cells
    Schizosaccharomyces pombe yeast — Stock Photo
    Schizosaccharomyces pombe yeast
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Strawberry pollen grain — Stock Photo
    Strawberry pollen grain
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (green) — Stock Photo
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (green)
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea
    Coiled proboscis of a moth — Stock Photo
    Coiled proboscis of a moth
    Varicella zoster virus particle — Stock Photo
    Varicella zoster virus particle
    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Fractured bladder stone — Stock Photo
    Fractured bladder stone
    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
    Crystalline lens of the eye — Stock Photo
    Crystalline lens of the eye
    Blood clot structure — Stock Photo
    Blood clot structure
    Red blood cells with fibrin — Stock Photo
    Red blood cells with fibrin
    Red blood cells and platelets — Stock Photo
    Red blood cells and platelets
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin — Stock Photo
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin
    Freshwater diatom Licmorpha sp. — Stock Photo
    Freshwater diatom Licmorpha sp.
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    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
    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.
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample. — Stock Photo
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample.
    Bird bone tissue — Stock Photo
    Bird bone tissue
    Asparagus beetle head — Stock Photo
    Asparagus beetle head
    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
    Scanning electron microscopy of DNA molecules and red and white blood cells. — Stock Photo
    Scanning electron microscopy of DNA molecules and red and white blood cells.
    Colored scanning electron micrograph of osteosarcoma bone cancer cell. — Stock Photo
    Colored scanning electron micrograph of osteosarcoma bone cancer cell.
    Flowering currant pollen grains — Stock Photo
    Flowering currant pollen grains
    Used surgical swab — Stock Photo
    Used surgical swab
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats — Stock Photo
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Marjoram (Origanum vilgare) leaf surface, coloured scanning electron micrograph (SEM). — Stock Photo
    Marjoram (Origanum vilgare) leaf surface, coloured scanning electron micrograph (SEM).
    B-lymphocyte white blood cells — Stock Photo
    B-lymphocyte white blood cells
    Abutilon sp. pollen grain — Stock Photo
    Abutilon sp. pollen grain
    Helicobacter pylori bacterium — Stock Photo
    Helicobacter pylori bacterium