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    Red blood cells, abstract digital illustration. — Stock Photo
    Red blood cells, abstract digital illustration.
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Digital illustration of red virus particles on plain background. — Stock Photo
    Digital illustration of red virus particles on plain background.
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    3d digital illustration of narrowed blood vessel. — Stock Photo
    3d digital illustration of narrowed blood vessel.
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Digital illustration of red migrating cancer cells. — Stock Photo
    Digital illustration of red migrating cancer cells.
    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.
    3d illustration of green cells pattern with red nuclei. — Stock Photo
    3d illustration of green cells pattern with red nuclei.
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration.
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Cancer cell, computer illustration. — Stock Photo
    Cancer cell, computer illustration.
    Cancer cells, computer illustration — Stock Photo
    Cancer cells, computer illustration
    Swine influenza virus microscopic view — Stock Photo
    Swine influenza virus microscopic view
    Pyramidal neurons of human brain cortex, computer illustration — Stock Photo
    Pyramidal neurons of human brain cortex, computer illustration
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Illustration of group of cells in blood clot. — Stock Photo
    Illustration of group of cells in blood clot.
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration.
    Microbiological cultures growing in Petri dishes. — Stock Photo
    Microbiological cultures growing in Petri dishes.
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Microscopic colored view of a unipolar neuron — Stock Photo
    Microscopic colored view of a unipolar neuron
    Medical illustration of blood clotting process inside artery — Stock Photo
    Medical illustration of blood clotting process inside artery
    B-lymphocyte cells, computer illustration — Stock Photo
    B-lymphocyte cells, computer illustration
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells — Stock Photo
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells
    Human blood cells, computer illustration — Stock Photo
    Human blood cells, computer illustration
    Nerve cells and intercellular junctions — Stock Photo
    Nerve cells and intercellular junctions
    Cell-based testing kit in bioengineering laboratory. — Stock Photo
    Cell-based testing kit in bioengineering laboratory.
    Angel trumpets pollen grain — Stock Photo
    Angel trumpets pollen grain
    Pharmaceutical research. Potential new medicines and vaccines on electron micrograph of virus — Stock Photo
    Pharmaceutical research. Potential new medicines and vaccines on electron micrograph of virus
    Human blood cells — Stock Photo
    Human blood cells
    Digital artwork of round blue cells on plain background. — Stock Photo
    Digital artwork of round blue cells on plain background.
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Embryo selection for IVF — Stock Photo
    Embryo selection for IVF
    Digital illustration of intestinal villi in digestive system. — Stock Photo
    Digital illustration of intestinal villi in digestive system.
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Colored illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Colored illustration of cancer cell being attacked by white blood cells.
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (grey) and large intercellular air spaces (holes). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (grey) and large intercellular air spaces (holes).
    Female cell biologist placing flask containing stem cells cultivated in red growth medium under microscope. — Stock Photo
    Female cell biologist placing flask containing stem cells cultivated in red growth medium under microscope.
    Conceptual illustration showing virus infecting neurons of brain. — Stock Photo
    Conceptual illustration showing virus infecting neurons of brain.
    Close-up 3d illustration of blue cells pattern with red nuclei. — Stock Photo
    Close-up 3d illustration of blue cells pattern with red nuclei.
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface.
    Animal cells during cytokinesis (cell division), illustration — Stock Photo
    Animal cells during cytokinesis (cell division), illustration
    Lassa virus particles, digital illustration. — Stock Photo
    Lassa virus particles, digital illustration.
    Plasmodium malariae protozoan inside red blood cells in the ring-form trophozoite stage, computer illustration — Stock Photo
    Plasmodium malariae protozoan inside red blood cells in the ring-form trophozoite stage, computer illustration
    Digital illustration showing red blood cells, platelets, neutrophils, monocyte and lymphocytes in normal blood smear. — Stock Photo
    Digital illustration showing red blood cells, platelets, neutrophils, monocyte and lymphocytes in normal blood smear.
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Layer of cells, computer illustration — Stock Photo
    Layer of cells, computer illustration
    Intestinal villi, computer illustration — Stock Photo
    Intestinal villi, computer illustration
    Cell membrane structure, digital illustration. — Stock Photo
    Cell membrane structure, digital illustration.
    Human sperm cells, abstract computer illustration. — Stock Photo
    Human sperm cells, abstract computer illustration.
    Locker room with open and closed cells and keys — Stock Photo
    Locker room with open and closed cells and keys
    Visual rendering of Sleeping sickness — Stock Photo
    Visual rendering of Sleeping sickness
    Lymphocyte, monocyte and neutrophil white blood cells in blood smear, digital illustration. — Stock Photo
    Lymphocyte, monocyte and neutrophil white blood cells in blood smear, digital illustration.
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Aconite anther and pollen — Stock Photo
    Aconite anther and pollen
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Active platelets in human blood with erythrocytes and leukocytes, computer illustration. — Stock Photo
    Active platelets in human blood with erythrocytes and leukocytes, computer illustration.
    Green coli bacteria on plain background, digital illustration. — Stock Photo
    Green coli bacteria on plain background, digital illustration.