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    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung — Stock Photo
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung
    Unrecognizable young male vet in sterile mask and gloves standing near female colleague while preparing for work in lab — Stock Photo
    Unrecognizable young male vet in sterile mask and gloves standing near female colleague while preparing for work in lab
    Cat flea head — Stock Photo
    Cat flea head
    Light micrograph of hepatic hemosiderosis. Hemosiderosis is a form of iron overload disorder resulting in the accumulation of hemosiderin. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of hepatic hemosiderosis. Hemosiderosis is a form of iron overload disorder resulting in the accumulation of hemosiderin. Haematoxylin and eosin stain.
    Bone marrow cellular structure — Stock Photo
    Bone marrow cellular structure
    Close-up of hands of scientist placing slide with human sample under light microscope for medical testing. — Stock Photo
    Close-up of hands of scientist placing slide with human sample under light microscope for medical testing.
    Light micrograph of onion (Allium cepa) root tip cells undergoing mitosis (nuclear division). — Stock Photo
    Light micrograph of onion (Allium cepa) root tip cells undergoing mitosis (nuclear division).
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Portrait of young female archaeologist working with microscope. — Stock Photo
    Portrait of young female archaeologist working with microscope.
    Male biologist working with microscope with colleague in background — Stock Photo
    Male biologist working with microscope with colleague in background
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Focused adult female doctor in sterile mask and ornamental medical cap looking through surgical microscope against crop coworker in hospital — Stock Photo
    Focused adult female doctor in sterile mask and ornamental medical cap looking through surgical microscope against crop coworker in hospital
    Biotechnology scientist taking note while biochemical research. — Stock Photo
    Biotechnology scientist taking note while biochemical research.
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut — Stock Photo
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut
    Scientists holding multiwell plate with chemical solution for analytical testing in laboratory. — Stock Photo
    Scientists holding multiwell plate with chemical solution for analytical testing in laboratory.
    Morphology of Activated platelets — Stock Photo
    Morphology of Activated platelets
    Closeup extreme magnified unusual fly of orange and purple color with antennae — Stock Photo
    Closeup extreme magnified unusual fly of orange and purple color with antennae
    Side view focused male expert in lab coat gloves and face mask examining samples through powerful microscope lenses while working in modern equipped laboratory — Stock Photo
    Side view focused male expert in lab coat gloves and face mask examining samples through powerful microscope lenses while working in modern equipped laboratory
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Scientists preparing glass slide with sample in laboratory. — Stock Photo
    Scientists preparing glass slide with sample in laboratory.
    Magnified digital illustration of 2 cell stage embryo. — Stock Photo
    Magnified digital illustration of 2 cell stage embryo.
    Microbiologist using light microscope in laboratory — Stock Photo
    Microbiologist using light microscope in laboratory
    Strawberry pollen grain — Stock Photo
    Strawberry pollen grain
    Myelinated nerve fibres — Stock Photo
    Myelinated nerve fibres
    Red blood cells — Stock Photo
    Red blood cells
    Horse chestnut pollen grain — Stock Photo
    Horse chestnut pollen grain
    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.
    Nipah virus particles, computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs — Stock Photo
    Nipah virus particles, computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs
    Coloured scanning electron micrograph of surface of prostate cancer cells. — Stock Photo
    Coloured scanning electron micrograph of surface of prostate cancer cells.
    Girl doing experiment on microscope at home — Stock Photo
    Girl doing experiment on microscope at home
    Male scientist wearing surgical cap using microscope. — Stock Photo
    Male scientist wearing surgical cap using microscope.
    Side view of woman in medical uniform and mask using modern microscope to examine human cells while working in lab of modern clinic — Stock Photo
    Side view of woman in medical uniform and mask using modern microscope to examine human cells while working in lab of modern clinic
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs — Stock Photo
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Microbiologist working in laboratory with bacteria growth in petri dish. — Stock Photo
    Microbiologist working in laboratory with bacteria growth in petri dish.
    Scanning electron micrograph of bacterial culture from sputum. — Stock Photo
    Scanning electron micrograph of bacterial culture from sputum.
    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Cross-section through a cotton stem — Stock Photo
    Cross-section through a cotton stem
    Colored scanning electron micrograph of diatoms photosynthetic single-celled algae. — Stock Photo
    Colored scanning electron micrograph of diatoms photosynthetic single-celled algae.
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Light micrograph of a buccal mucosa cell. This cell lines the cheeks and the back of the lips. — Stock Photo
    Light micrograph of a buccal mucosa cell. This cell lines the cheeks and the back of the lips.
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is red. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (black) contain enzymes for digesting foreign particles. — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is red. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (black) contain enzymes for digesting foreign particles.
    Schoolboy using light microscope in school laboratory. — Stock Photo
    Schoolboy using light microscope in school laboratory.
    Scientist using laptop at desk in science laboratory — Stock Photo
    Scientist using laptop at desk in science laboratory
    Lime tree stem — Stock Photo
    Lime tree stem
    Female scientists working in laboratory. — Stock Photo
    Female scientists working in laboratory.
    Angel trumpets pollen — Stock Photo
    Angel trumpets pollen
    Girl students using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students using microscope, conducting scientific experiment in laboratory classroom
    Abutilon pollen grain — Stock Photo
    Abutilon pollen grain
    University students using digital tablet while doing experiment on microscope in laboratory at college — Stock Photo
    University students using digital tablet while doing experiment on microscope in laboratory at college
    Magnified digital illustration of dendritic cell. — Stock Photo
    Magnified digital illustration of dendritic cell.
    Side view of black glossy flying incest with threatening antennae large eyes and transparent wing — Stock Photo
    Side view of black glossy flying incest with threatening antennae large eyes and transparent wing
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore — Stock Photo
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore
    Close-up of hands of scientist pipetting sample from culture in Petri dish. — Stock Photo
    Close-up of hands of scientist pipetting sample from culture in Petri dish.
    Fungal cells revealing sporangium with spores — Stock Photo
    Fungal cells revealing sporangium with spores
    Close up of boy looking through a microscope at a bug — Stock Photo
    Close up of boy looking through a microscope at a bug
    Little boy examining bug under microscope — Stock Photo
    Little boy examining bug under microscope