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    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    Computer illustration of bacteria on the surface of intestinal villi — Stock Photo
    Computer illustration of bacteria on the surface of intestinal villi
    Microvilli of gallbladder surface — Stock Photo
    Microvilli of gallbladder surface
    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.
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph. — Stock Photo
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph.
    Megakaryocyte in human blood, computer illustration. — Stock Photo
    Megakaryocyte in human blood, computer illustration.
    Bacteria and virus on human skin, digital illustration. — Stock Photo
    Bacteria and virus on human skin, digital illustration.
    Animal cells with mitochondria, digital illustration. — Stock Photo
    Animal cells with mitochondria, digital illustration.
    Immunodeficiency virus infection in blood stream — Stock Photo
    Immunodeficiency virus infection in blood stream
    Illustration of antibodies attacking influenza virus. — Stock Photo
    Illustration of antibodies attacking influenza virus.
    Computer illustration of unicellular fungus (yeast) Candida auris — Stock Photo
    Computer illustration of unicellular fungus (yeast) Candida auris
    Illustration of leucocyte cell surrounded by antibodies on white background. — Stock Photo
    Illustration of leucocyte cell surrounded by antibodies on white background.
    Cannabis plant. Coloured scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant. The pointed hairs are called lithocyst cells. They contain cystoliths (calcium carbonate crystals) — Stock Photo
    Cannabis plant. Coloured scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant. The pointed hairs are called lithocyst cells. They contain cystoliths (calcium carbonate crystals)
    3d illustration of white blood cells leukocytes secreting antibodies to destroy allergen in human body. — Stock Photo
    3d illustration of white blood cells leukocytes secreting antibodies to destroy allergen in human body.
    Various bacteria in human intestine, digital illustration. — Stock Photo
    Various bacteria in human intestine, digital illustration.
    Human brain with close-up view of neurons, computer illustration. — Stock Photo
    Human brain with close-up view of neurons, computer illustration.
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells.
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    3d illustration of aligned cells with red cell in middle. — Stock Photo
    3d illustration of aligned cells with red cell in middle.
    Closeup of Amoeba, computer illustration — Stock Photo
    Closeup of Amoeba, computer illustration
    3d illustration of red blood cells erythrocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes.
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Simple squamous epithelium, digital illustration. — Stock Photo
    Simple squamous epithelium, digital illustration.
    Digital illustration of human cilia cells. — Stock Photo
    Digital illustration of human cilia cells.
    Fertilisation of egg cell with spermatozoa, digital illustration. — Stock Photo
    Fertilisation of egg cell with spermatozoa, digital illustration.
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells — Stock Photo
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells
    3d illustration of sperm cells frozen into ice cubes. — Stock Photo
    3d illustration of sperm cells frozen into ice cubes.
    Fat cells, conceptual computer illustration. — Stock Photo
    Fat cells, conceptual computer illustration.
    Coronavirus particles infecting a human cell, computer illustration — Stock Photo
    Coronavirus particles infecting a human cell, computer illustration
    Technician checking stem cell cultures in bioengineering laboratory. — Stock Photo
    Technician checking stem cell cultures in bioengineering laboratory.
    Cancer cell structure and shape — Stock Photo
    Cancer cell structure and shape
    Cell culture plate on white background. — Stock Photo
    Cell culture plate on white background.
    Leaf epidermis, light micrograph. Leaf epidermis has small pores, called stomata, which open up for photosynthetic gas exchange and transpiration. — Stock Photo
    Leaf epidermis, light micrograph. Leaf epidermis has small pores, called stomata, which open up for photosynthetic gas exchange and transpiration.
    Pyramidal neurons of human brain cortex, computer illustration — Stock Photo
    Pyramidal neurons of human brain cortex, computer illustration
    Anthrax bacteria, illustration. Anthrax bacteria (Bacillus anthracis) are the cause of the disease anthrax in humans and livestock. They are gram-positive spore producing bacteria arranged in chains (streptobacilli). — Stock Photo
    Anthrax bacteria, illustration. Anthrax bacteria (Bacillus anthracis) are the cause of the disease anthrax in humans and livestock. They are gram-positive spore producing bacteria arranged in chains (streptobacilli).
    Balamuthia mandrillaris amoeba organisms, digital illustration. — Stock Photo
    Balamuthia mandrillaris amoeba organisms, digital illustration.
    Nipah virus particles, digital artwork. — Stock Photo
    Nipah virus particles, digital artwork.
    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.
    Cancer cell, computer illustration. — Stock Photo
    Cancer cell, computer illustration.
    Illustration of a dendritic cell (centre, purple) activating T-cells (teal). Dendritic cells recognise viruses and present information about their antigens to T-cells — Stock Photo
    Illustration of a dendritic cell (centre, purple) activating T-cells (teal). Dendritic cells recognise viruses and present information about their antigens to T-cells
    Nerves synapse, biological digital illustration. — Stock Photo
    Nerves synapse, biological digital illustration.
    Monocyte in human blood, computer illustration. — Stock Photo
    Monocyte in human blood, computer illustration.
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Alstroemeria anther and pollen — Stock Photo
    Alstroemeria anther and pollen
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa. — Stock Photo
    Digital conceptual illustration of fertilisation of egg cell with spermatozoa.
    CRISPR-Cas9 gene editing complex in DNA and cells, conceptual illustration. — Stock Photo
    CRISPR-Cas9 gene editing complex in DNA and cells, conceptual illustration.
    Illustration of purple chloride channels in cell membrane. — Stock Photo
    Illustration of purple chloride channels in cell membrane.
    Cancer cell attacked by T cell — Stock Photo
    Cancer cell attacked by T cell
    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.
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Illustration of human blood cells in blood stream. — Stock Photo
    Illustration of human blood cells in blood stream.
    Microbiological cultures growing in Petri dishes. — Stock Photo
    Microbiological cultures growing in Petri dishes.
    Healthy human sperm cells — Stock Photo
    Healthy human sperm cells
    Human blood cells, light micrograph. — Stock Photo
    Human blood cells, light micrograph.
    Neural network connections and nerve cells, digital illustration. — Stock Photo
    Neural network connections and nerve cells, digital illustration.
    Digital illustration of green bacteria cells on white background. — Stock Photo
    Digital illustration of green bacteria cells on white background.
    Sperm cells in seminiferous tubule — Stock Photo
    Sperm cells in seminiferous tubule
    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
    Biotechnology engineer inspecting cell culture flask. — Stock Photo
    Biotechnology engineer inspecting cell culture flask.
    Lymphocytes attacking a cancer cell — Stock Photo
    Lymphocytes attacking a cancer cell