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    Large thrombus formation — Stock Photo
    Large thrombus formation
    Human sperm cells — Stock Photo
    Human sperm cells
    Section through bone marrow — Stock Photo
    Section through bone marrow
    Human cell, computer illustration. — Stock Photo
    Human cell, computer illustration.
    Human sperm cells — Stock Photo
    Human sperm cells
    Blood clot formed by red blood cells — Stock Photo
    Blood clot formed by red blood cells
    Cancer cells with cytoplasmic projections — Stock Photo
    Cancer cells with cytoplasmic projections
    Undifferentiated stem cells — Stock Photo
    Undifferentiated stem cells
    Purkinje neurons in the cerebellum — Stock Photo
    Purkinje neurons in the cerebellum
    Neutrophil white blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cells, digital illustration.
    Medical illustration of human cell structure on dark background. — Stock Photo
    Medical illustration of human cell structure on dark background.
    Section through bone marrow — Stock Photo
    Section through bone marrow
    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
    Transparent cells on white background, digital illustration. — Stock Photo
    Transparent cells on white background, digital illustration.
    Magnified digital illustration of mast cell. — Stock Photo
    Magnified digital illustration of mast cell.
    Structure of cellular organelles — Stock Photo
    Structure of cellular organelles
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    Monocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Monocyte white blood cell in blood smear, digital illustration.
    Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow).
    Digital artwork of round blue cells on black background. — Stock Photo
    Digital artwork of round blue cells on black background.
    Lysosome fusing with autophagosome — Stock Photo
    Lysosome fusing with autophagosome
    3d illustration of a ribosome (purple), the site of protein synthesis, producing a polypeptide chain (blue). This process is known as translation. — Stock Photo
    3d illustration of a ribosome (purple), the site of protein synthesis, producing a polypeptide chain (blue). This process is known as translation.
    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    Pneumonia caused by Mycoplasma pneumoniae bacteria, conceptual digital illustration. — Stock Photo
    Pneumonia caused by Mycoplasma pneumoniae bacteria, conceptual digital illustration.
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Nerve cells and intercellular junctions — Stock Photo
    Nerve cells and intercellular junctions
    Digital illustration of human cell anatomy. — Stock Photo
    Digital illustration of human cell anatomy.
    Digital illustration of pyramidal nerve cells from cerebral cortex of brain. — Stock Photo
    Digital illustration of pyramidal nerve cells from cerebral cortex of brain.
    Magnified digital illustration of antibody cell. — Stock Photo
    Magnified digital illustration of antibody cell.
    Activated platelet cells — Stock Photo
    Activated platelet cells
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Magnified digital illustration of morula cells. — Stock Photo
    Magnified digital illustration of morula cells.
    Bacteriophages infecting bacteria, digital illustration. — Stock Photo
    Bacteriophages infecting bacteria, digital illustration.
    Cells dividing, computer illustration — Stock Photo
    Cells dividing, computer illustration
    Pathological phosphorylation of red-orange Tau proteins by blue-purple kinases affecting nerve cells in Alzheimers disease, illustration. — Stock Photo
    Pathological phosphorylation of red-orange Tau proteins by blue-purple kinases affecting nerve cells in Alzheimers disease, illustration.
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Columnar epithelium structure — Stock Photo
    Columnar epithelium structure
    Neutrophil and monocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Neutrophil and monocyte white blood cells in blood smear, digital illustration.
    Abstract cancer cells, digital illustration. — Stock Photo
    Abstract cancer cells, digital illustration.
    Cancer cell with filaments — Stock Photo
    Cancer cell with filaments
    Digital illustration showing inclusion composed of chlamydia reticulate bodies near nucleus of cell. — Stock Photo
    Digital illustration showing inclusion composed of chlamydia reticulate bodies near nucleus of cell.
    Artwork of cancerous cell — Stock Photo
    Artwork of cancerous cell
    Conceptual illustration of organic cell structure. — Stock Photo
    Conceptual illustration of organic cell structure.
    3d illustration of a Golgi apparatus, or body, within a eukaryotic cell. Golgi are membrane-bound organelles that modify and package proteins. — Stock Photo
    3d illustration of a Golgi apparatus, or body, within a eukaryotic cell. Golgi are membrane-bound organelles that modify and package proteins.
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Cells trapped in fibrin protein mesh — Stock Photo
    Cells trapped in fibrin protein mesh
    Magnified digital illustration of neutrophil cell. — Stock Photo
    Magnified digital illustration of neutrophil cell.
    Cell membrane, illustration, colorful image — Stock Photo
    Cell membrane, illustration, colorful image
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells.
    Illustration of silhouette of pregnant woman with visible uterus and 16 cell stage embryo. — Stock Photo
    Illustration of silhouette of pregnant woman with visible uterus and 16 cell stage embryo.
    Magnified digital illustration of macrophage cell. — Stock Photo
    Magnified digital illustration of macrophage cell.
    Neutrophil and monocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Neutrophil and monocyte white blood cells in blood smear, digital illustration.
    Multicellular organism visualization — Stock Photo
    Multicellular organism visualization
    Cancer cell morphology — Stock Photo
    Cancer cell morphology
    Animal cells with mitochondria, digital illustration. — Stock Photo
    Animal cells with mitochondria, digital illustration.
    Activation of ras protein, digital illustration. — Stock Photo
    Activation of ras protein, digital illustration.
    Cell membrane structure, digital illustration. — Stock Photo
    Cell membrane structure, digital illustration.
    Lysosome fusing with autophagosome — Stock Photo
    Lysosome fusing with autophagosome
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration.