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    Digital illustration of human cells on blue background. — Stock Photo
    Digital illustration of human cells on blue background.
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Microbiological culture growing in Petri dish. — Stock Photo
    Microbiological culture growing in Petri dish.
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Inner structure of a typical bacterial cell, illustration. Bacterial cells do not have a membrane-bound nucleus or organelles — Stock Photo
    Inner structure of a typical bacterial cell, illustration. Bacterial cells do not have a membrane-bound nucleus or organelles
    Antibody molecular structure — Stock Photo
    Antibody molecular structure
    Abstract animal cells, digital illustration. — Stock Photo
    Abstract animal cells, digital illustration.
    Basophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Basophil white blood cell and red blood cells, digital illustration.
    Human cell, computer illustration — Stock Photo
    Human cell, computer illustration
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Digital illustration of hypochromic and microcytic red blood cells while iron deficiency anaemia. — Stock Photo
    Digital illustration of hypochromic and microcytic red blood cells while iron deficiency anaemia.
    Monocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Monocyte white blood cell in blood smear, digital illustration.
    Computer illustration of bacteria on the surface of intestinal villi — Stock Photo
    Computer illustration of bacteria on the surface of intestinal villi
    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.
    Basophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Basophil white blood cell and red blood cells, digital illustration.
    Cancer cell attacked by T cell — Stock Photo
    Cancer cell attacked by T cell
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Bacterial cells on tissue surface — Stock Photo
    Bacterial cells on tissue surface
    Human Platelets, computer illustration — Stock Photo
    Human Platelets, computer illustration
    Illustration of bacteriophages (purple) infecting a bacterial cell. Bacteriophages, or phages, infect a bacterium by attaching to its surface (blue) and injecting genetic material (brown) into the cell — Stock Photo
    Illustration of bacteriophages (purple) infecting a bacterial cell. Bacteriophages, or phages, infect a bacterium by attaching to its surface (blue) and injecting genetic material (brown) into the cell
    Human blood cells, light micrograph. — Stock Photo
    Human blood cells, light micrograph.
    Transparent cells on white background, digital illustration. — Stock Photo
    Transparent cells on white background, digital illustration.
    Digital artwork showing inclusion composed of group of chlamydia reticulate bodies of Chlamydia trachomatis bacteria. — Stock Photo
    Digital artwork showing inclusion composed of group of chlamydia reticulate bodies of Chlamydia trachomatis bacteria.
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Hair follicles of human skin — Stock Photo
    Hair follicles of human skin
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Red blood cells — Stock Photo
    Red blood cells
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    Lung cancer cells, digital illustration. — Stock Photo
    Lung cancer cells, digital illustration.
    Cancer cell being attacked by leukocytes, computer illustration — Stock Photo
    Cancer cell being attacked by leukocytes, computer illustration
    Plant cells, 3d illustration — Stock Photo
    Plant cells, 3d illustration
    Monocyte in human blood, computer illustration. — Stock Photo
    Monocyte in human blood, computer illustration.
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut — Stock Photo
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut
    Red blood cells — Stock Photo
    Red blood cells
    Fat cells and supportive connective tissue — Stock Photo
    Fat cells and supportive connective tissue
    Red blood cells, computer illustration — Stock Photo
    Red blood cells, computer illustration
    Coloured scanning electron micrograph of breast cancer cells. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cells.
    Illustration of HIV particles in blood. — Stock Photo
    Illustration of HIV particles in blood.
    HIV virus particles — Stock Photo
    HIV virus particles
    Parasites attacking spermatozoons fertilizing egg cell. — Stock Photo
    Parasites attacking spermatozoons fertilizing egg cell.
    Cancer cells and blood vessels — Stock Photo
    Cancer cells and blood vessels
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    White blood cells and proteins, digital illustration. — Stock Photo
    White blood cells and proteins, digital illustration.
    Crenated red blood cells — Stock Photo
    Crenated red blood cells
    Light micrograph of Dicot plants stem showing plant vascular tissue. — Stock Photo
    Light micrograph of Dicot plants stem showing plant vascular tissue.
    White blood cells, digital illustration. — Stock Photo
    White blood cells, digital illustration.
    Illustration of CAR DNA modified T-cell immunotherapy process for cancer treatment. — Stock Photo
    Illustration of CAR DNA modified T-cell immunotherapy process for cancer treatment.
    Red interleukin cells binding to blue receptor, digital illustration. — Stock Photo
    Red interleukin cells binding to blue receptor, digital illustration.
    Human blood, computer illustration — Stock Photo
    Human blood, computer illustration
    3d illustration of white blood cells leukocytes in human body. — Stock Photo
    3d illustration of white blood cells leukocytes in human body.
    Erythrocytes red blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes red blood cells in human blood vessel, digital illustration.
    Red blood cells in blood stream — Stock Photo
    Red blood cells in blood stream
    Human oesophagus wall — Stock Photo
    Human oesophagus wall
    Illustration of CAR (chimeric antigen receptor) T cell immunotherapy, process that is being developed to treat cancer — Stock Photo
    Illustration of CAR (chimeric antigen receptor) T cell immunotherapy, process that is being developed to treat cancer
    Axon connections between cells — Stock Photo
    Axon connections between cells
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells — Stock Photo
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells
    Aconite anther and pollen — Stock Photo
    Aconite anther and pollen
    Lysosome fusing with autophagosome — Stock Photo
    Lysosome fusing with autophagosome
    3d illustration of red blood cell erythrocyte, white blood cell leukocyte and platelet thrombocyte. — Stock Photo
    3d illustration of red blood cell erythrocyte, white blood cell leukocyte and platelet thrombocyte.