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    Malaria infection infecting red blood cells, digital illustration. — Stock Photo
    Malaria infection infecting red blood cells, digital illustration.
    Sperm cells, abstract digital illustration. — Stock Photo
    Sperm cells, abstract digital illustration.
    Genetic engineering, conceptual illustration. — Stock Photo
    Genetic engineering, conceptual illustration.
    Protozoan Plasmodium malariae inside red blood cell in the schizont stage, computer illustration — Stock Photo
    Protozoan Plasmodium malariae inside red blood cell in the schizont stage, computer illustration
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Protein molecules, 3d illustration — Stock Photo
    Protein molecules, 3d illustration
    3d illustration of sperm cells moving towards human womb. — Stock Photo
    3d illustration of sperm cells moving towards human womb.
    Microbiological cultures growing in Petri dishes. — Stock Photo
    Microbiological cultures growing in Petri dishes.
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Colored scanning electron micrograph of starch grains in seed of legume. — Stock Photo
    Colored scanning electron micrograph of starch grains in seed of legume.
    Bacteria and virus on human skin, digital illustration. — Stock Photo
    Bacteria and virus on human skin, digital illustration.
    Scientist examining cultured cells under microscope. — Stock Photo
    Scientist examining cultured cells under microscope.
    Peripheral nerve. Coloured transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin( brown) is an insulating fatty layer that surrounds the myelinated nerve fibres (blue) — Stock Photo
    Peripheral nerve. Coloured transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin( brown) is an insulating fatty layer that surrounds the myelinated nerve fibres (blue)
    3d illustration of water drops on close-up part of skin with hair and hair roots. — Stock Photo
    3d illustration of water drops on close-up part of skin with hair and hair roots.
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus — Stock Photo
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus
    Colored scanning electron micrograph of white blood cells and single platelet. — Stock Photo
    Colored scanning electron micrograph of white blood cells and single platelet.
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Intestinal villi, computer illustration — Stock Photo
    Intestinal villi, computer illustration
    Computer illustration of neurons (nerve cells), which communicate with other cells via synapse connections — Stock Photo
    Computer illustration of neurons (nerve cells), which communicate with other cells via synapse connections
    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.
    Pancreatic cells. Colored transmission electron micrograph (TEM) of acinar (exocrine) pancreatic cells (red) adjacent to hormone- secreting (endocrine) Islet of Langerhans cells (yellow) — Stock Photo
    Pancreatic cells. Colored transmission electron micrograph (TEM) of acinar (exocrine) pancreatic cells (red) adjacent to hormone- secreting (endocrine) Islet of Langerhans cells (yellow)
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus — Stock Photo
    T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus
    Coloured scanning electron micrograph of cancer cells migrating down pores. — Stock Photo
    Coloured scanning electron micrograph of cancer cells migrating down pores.
    Colored scanning electron micrograph showing urethral epithelium of urethra. — Stock Photo
    Colored scanning electron micrograph showing urethral epithelium of urethra.
    Closeup of Amoeba, computer illustration — Stock Photo
    Closeup of Amoeba, computer illustration
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Enzymes on plain background, digital illustration. — Stock Photo
    Enzymes on plain background, digital illustration.
    Coloured scanning electron micrograph of ovarian cancer cells. — Stock Photo
    Coloured scanning electron micrograph of ovarian cancer cells.
    Illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Illustration of cancer cell being attacked by white blood cells.
    Transparent sperm cells moving towards round red colored egg cell, illustration. — Stock Photo
    Transparent sperm cells moving towards round red colored egg cell, illustration.
    Human brain with close-up view of neurons, computer illustration. — Stock Photo
    Human brain with close-up view of neurons, computer illustration.
    3d illustration of red blood cells erythrocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes.
    Cancer cells and blood vessels — Stock Photo
    Cancer cells and blood vessels
    Stomach cancer cell, computer illustration — Stock Photo
    Stomach cancer cell, computer illustration
    Digital illustration of virus particles on plain background. — Stock Photo
    Digital illustration of virus particles on plain background.
    Ovarian cancer cells, coloured scanning electron micrograph. — Stock Photo
    Ovarian cancer cells, coloured scanning electron micrograph.
    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.
    Conceptual illustration of chicken eggs in carton and magnification of bacteria of food-borne infection on white background. — Stock Photo
    Conceptual illustration of chicken eggs in carton and magnification of bacteria of food-borne infection on white background.
    Eight-cell embryo — Stock Photo
    Eight-cell embryo
    Red blood cells in a blood vessel — Stock Photo
    Red blood cells in a blood vessel
    Coloured scanning electron micrograph (SEM) of Pediculus humanus capitis, human head lice. P. humanus is divided into two subspecies; the head louse P. humanus capitis and the body louse P. humanus corporis — Stock Photo
    Coloured scanning electron micrograph (SEM) of Pediculus humanus capitis, human head lice. P. humanus is divided into two subspecies; the head louse P. humanus capitis and the body louse P. humanus corporis
    Technician holding cell samples in bioengineering laboratory. — Stock Photo
    Technician holding cell samples in bioengineering laboratory.
    Bacteriophage virus cells infecting bacterium, digital illustration. — Stock Photo
    Bacteriophage virus cells infecting bacterium, digital illustration.
    Fungal cells revealing sporangium with spores — Stock Photo
    Fungal cells revealing sporangium with spores
    Medical illustration of the organ of Corti anatomy — Stock Photo
    Medical illustration of the organ of Corti anatomy
    Leukaemia blood cells — Stock Photo
    Leukaemia blood cells
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Digital illustration of budding Saccharomyces cerevisiae yeast cells. — Stock Photo
    Digital illustration of budding Saccharomyces cerevisiae yeast cells.
    Closeup of abstract background with round shaped cells of vaccine of different sizes illuminated by colorful light — Stock Photo
    Closeup of abstract background with round shaped cells of vaccine of different sizes illuminated by colorful light
    Digital illustration of pyramidal nerve cells from cerebral cortex of brain. — Stock Photo
    Digital illustration of pyramidal nerve cells from cerebral cortex of brain.
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept. — Stock Photo
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept.
    Transparent cells on grey background, digital illustration. — Stock Photo
    Transparent cells on grey background, digital illustration.
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells — Stock Photo
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Molecular structure illustrating pure research. — Stock Photo
    Molecular structure illustrating pure research.
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Illustration of red and white blood cells in the bloodstream. — Stock Photo
    Illustration of red and white blood cells in the bloodstream.
    Abstract structure of neural network on light background, digital illustration. — Stock Photo
    Abstract structure of neural network on light background, digital illustration.
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration. — Stock Photo
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration.