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    Coloured scanning electron micrograph (SEM) of a fractured mucous membrane of the trachea (wind pipe), showing the epithelium and underlying connective tissue. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured mucous membrane of the trachea (wind pipe), showing the epithelium and underlying connective tissue.
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Light micrograph of goblet cells in colon. — Stock Photo
    Light micrograph of goblet cells in colon.
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Human sperm cells — Stock Photo
    Human sperm cells
    Intestinal villi projections — Stock Photo
    Intestinal villi projections
    Human white blood cell — Stock Photo
    Human white blood cell
    Section through the nasal mucosa — Stock Photo
    Section through the nasal mucosa
    Gall bladder lining — Stock Photo
    Gall bladder lining
    Structure of cellular organelles — Stock Photo
    Structure of cellular organelles
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Visual rendering of Animal cells — Stock Photo
    Visual rendering of Animal cells
    Structure of cellular organelles — Stock Photo
    Structure of cellular organelles
    Fallopian tube cellular structure — Stock Photo
    Fallopian tube cellular structure
    Gum tissue with gingivitis — Stock Photo
    Gum tissue with gingivitis
    Structure of cellular organelles — Stock Photo
    Structure of cellular organelles
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Columnar epithelium structure — Stock Photo
    Columnar epithelium structure
    Human brain cells — Stock Photo
    Human brain cells
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Animal Cells in culture — Stock Photo
    Animal Cells in culture
    Layer of cells, light micrograph and computer illustration. — Stock Photo
    Layer of cells, light micrograph and computer illustration.
    Light micrograph (LM) of the nasal sinuses ( lined by brown epithelium ) and the supporting cartilages (pink). — Stock Photo
    Light micrograph (LM) of the nasal sinuses ( lined by brown epithelium ) and the supporting cartilages (pink).
    Medical illustration of human cell structure on black background. — Stock Photo
    Medical illustration of human cell structure on black background.
    Freeze-fractured lens of an eye — Stock Photo
    Freeze-fractured lens of an eye
    Visual rendering of Animal cells — Stock Photo
    Visual rendering of Animal cells
    3d illustration of green cells pattern with red nuclei. — Stock Photo
    3d illustration of green cells pattern with red nuclei.
    Medical illustration of human cell structure on black background. — Stock Photo
    Medical illustration of human cell structure on black background.
    Layer of cells, computer illustration — Stock Photo
    Layer of cells, computer illustration
    Neutrophil white blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cells, digital illustration.
    Human sperm cells — Stock Photo
    Human sperm cells
    Cell membrane structure, digital illustration. — Stock Photo
    Cell membrane structure, digital illustration.
    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    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).
    3d illustration of cells pattern with red cell. — Stock Photo
    3d illustration of cells pattern with red cell.
    Light micrograph (LM) of a section through the fingertip. — Stock Photo
    Light micrograph (LM) of a section through the fingertip.
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Visual rendering of Animal cells — Stock Photo
    Visual rendering of Animal cells
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration.
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Monocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Monocyte white blood cell in blood smear, digital illustration.
    Cell membrane structure, digital illustration. — Stock Photo
    Cell membrane structure, digital illustration.
    Magnified digital illustration of mast cell. — Stock Photo
    Magnified digital illustration of mast cell.
    Cell membrane structure, digital illustration. — Stock Photo
    Cell membrane structure, digital illustration.
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    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.
    Conceptual illustration of organic cell structure. — Stock Photo
    Conceptual illustration of organic cell structure.
    Pink molecular model of DNA binding to anti-cancer protein p53. — Stock Photo
    Pink molecular model of DNA binding to anti-cancer protein p53.
    Medical illustration of human cell structure on black background. — Stock Photo
    Medical illustration of human cell structure on black background.
    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    Layer of cells, computer illustration — Stock Photo
    Layer of cells, computer illustration
    Structure of animal cell — Stock Photo
    Structure of animal cell
    Coloured transmission electron micrograph (TEM) of a section through a Langerhans cell from the epidermis of the skin. — Stock Photo
    Coloured transmission electron micrograph (TEM) of a section through a Langerhans cell from the epidermis of the skin.
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration.
    Animal cell structure — Stock Photo
    Animal cell structure