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    Female researcher using light microscope for examining stem cells in culture jar. — Stock Photo
    Female researcher using light microscope for examining stem cells in culture jar.
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs. — Stock Photo
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs.
    Lime tree stem — Stock Photo
    Lime tree stem
    Section through a nasal polyp — Stock Photo
    Section through a nasal polyp
    Redheaded boy using light microscope for studying on meadow. — Stock Photo
    Redheaded boy using light microscope for studying on meadow.
    Female scientist examining sample from culture in Petri dish. — Stock Photo
    Female scientist examining sample from culture in Petri dish.
    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.
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Researcher using a light microscope for studying tube containing blood sample. — Stock Photo
    Researcher using a light microscope for studying tube containing blood sample.
    Hands of scientist researching sample on microscope slide under light microscope. — Stock Photo
    Hands of scientist researching sample on microscope slide under light microscope.
    Female scientist viewing tissue sample under microscope. — Stock Photo
    Female scientist viewing tissue sample under microscope.
    Female scientist researching sample in petri dish under light microscope. — Stock Photo
    Female scientist researching sample in petri dish under light microscope.
    Light micrograph of blood cells (mainly B cells, dark purple) in the liver of a patient with lymphocytic leukaemia. — Stock Photo
    Light micrograph of blood cells (mainly B cells, dark purple) in the liver of a patient with lymphocytic leukaemia.
    Male human flea — Stock Photo
    Male human flea
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa. — Stock Photo
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa.
    Section through a Pacinian corpuscle — Stock Photo
    Section through a Pacinian corpuscle
    Cross-section through a cotton stem — Stock Photo
    Cross-section through a cotton stem
    Trachea lined with ciliated columnar epithelium — Stock Photo
    Trachea lined with ciliated columnar epithelium
    Unilocular adipose tissue — Stock Photo
    Unilocular adipose tissue
    Scientist examining cultured cells under microscope. — Stock Photo
    Scientist examining cultured cells under microscope.
    Female scientist viewing tissue sample under microscope. — Stock Photo
    Female scientist viewing tissue sample under microscope.
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Human oesophagus wall — Stock Photo
    Human oesophagus wall
    Thyroid gland showing the follicles — Stock Photo
    Thyroid gland showing the follicles
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla). — Stock Photo
    Light micrograph (LM). Longitudinal section through the thallus and sporangium of a liverwort (Pellia epiphylla).
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Schoolboy using light microscope in school laboratory. — Stock Photo
    Schoolboy using light microscope in school laboratory.
    Female scientist researching sample in petri dish under light microscope. — Stock Photo
    Female scientist researching sample in petri dish under light microscope.
    Sago palm leaf — Stock Photo
    Sago palm leaf
    Section through the cerebellum of the brain — Stock Photo
    Section through the cerebellum of the brain
    Gall bladder lining — Stock Photo
    Gall bladder lining
    Tongue surface, light micrograph and computer illustration. — Stock Photo
    Tongue surface, light micrograph and computer illustration.
    Tendon showing the parallel collagen fibres — Stock Photo
    Tendon showing the parallel collagen fibres
    Female scientist researching sample in petri dish under light microscope. — Stock Photo
    Female scientist researching sample in petri dish under light microscope.
    Examining cultured cells under microscope, close-up. — Stock Photo
    Examining cultured cells under microscope, close-up.
    Close-up of hands of scientist taking sample from culture in Petri dish. — Stock Photo
    Close-up of hands of scientist taking sample from culture in Petri dish.
    Hands of scientist researching sample on microscope slide under light microscope. — Stock Photo
    Hands of scientist researching sample on microscope slide under light microscope.
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Light micrograph (LM) of a section through the fingertip. — Stock Photo
    Light micrograph (LM) of a section through the fingertip.
    Laboratory worker pipetting liquid into microcentrifuge tube. — Stock Photo
    Laboratory worker pipetting liquid into microcentrifuge tube.
    Tendon showing the parallel collagen fibres — Stock Photo
    Tendon showing the parallel collagen fibres
    Female biology student using light microscope in laboratory. — Stock Photo
    Female biology student using light microscope in laboratory.
    Gum tissue with gingivitis — Stock Photo
    Gum tissue with gingivitis
    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.
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Section through a thyroid gland — Stock Photo
    Section through a thyroid gland
    Primary ovarian follicle — Stock Photo
    Primary ovarian follicle
    Female scientist researching sample in petri dish under light microscope. — Stock Photo
    Female scientist researching sample in petri dish under light microscope.
    Close-up of hands of scientist taking sample from culture in Petri dish. — Stock Photo
    Close-up of hands of scientist taking sample from culture in Petri dish.
    Lime tree stem — Stock Photo
    Lime tree stem
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left). — Stock Photo
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left).
    Lime tree stem — Stock Photo
    Lime tree stem
    Villi of the intestine — Stock Photo
    Villi of the intestine
    Developing pig eye — Stock Photo
    Developing pig eye
    Female scientist viewing tissue sample under microscope. — Stock Photo
    Female scientist viewing tissue sample under microscope.
    Plant sprouts in Petri dish under light microscope. — Stock Photo
    Plant sprouts in Petri dish under light microscope.
    Duct is lined with pseudostratified epithelium — Stock Photo
    Duct is lined with pseudostratified epithelium
    Omentum fold of peritoneal membrane — Stock Photo
    Omentum fold of peritoneal membrane
    Bone marrow cellular structure — Stock Photo
    Bone marrow cellular structure