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    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Molecular models of antibody structures, digital illustration. — Stock Photo
    Molecular models of antibody structures, digital 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
    Macrophage (purple) and cancer cells (red), illustration. — Stock Photo
    Macrophage (purple) and cancer cells (red), illustration.
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph.
    Side view of male activist hanging handmade wooden birdhouse on tree branch in summer day in green forest — Stock Photo
    Side view of male activist hanging handmade wooden birdhouse on tree branch in summer day in green forest
    Back view of Asian female with flying hair wearing protective mask walking in crowd and looking at camera — Stock Photo
    Back view of Asian female with flying hair wearing protective mask walking in crowd and looking at camera
    Purple Macrophage, computer illustration — Stock Photo
    Purple Macrophage, computer illustration
    Illustration of a dendritic cell, a type of white blood cell that is a component of the body's immune system. They are antigen presenting cells (APCs), that is, they present pathogens or foreign molecules (antigens) to other cells of immune system — Stock Photo
    Illustration of a dendritic cell, a type of white blood cell that is a component of the body's immune system. They are antigen presenting cells (APCs), that is, they present pathogens or foreign molecules (antigens) to other cells of immune system
    Illustration of a neutrophil. — Stock Photo
    Illustration of a neutrophil.
    Woman in protective mask giving paper shopping bag to client while working at counter in bulk shop — Stock Photo
    Woman in protective mask giving paper shopping bag to client while working at counter in bulk shop
    Male activist in protective mask and gloves explaining task to group of kids collecting garbage during environmental campaign in summer forest — Stock Photo
    Male activist in protective mask and gloves explaining task to group of kids collecting garbage during environmental campaign in summer forest
    Illustration of antibodies (blue) attaching to a viral (purple) infected cell. Antibodies bind to specific antigens, for instance viral proteins displayed on the surface of infected cells, marking them for destruction by phagocyte immune cells. — Stock Photo
    Illustration of antibodies (blue) attaching to a viral (purple) infected cell. Antibodies bind to specific antigens, for instance viral proteins displayed on the surface of infected cells, marking them for destruction by phagocyte immune cells.
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph.
    Blind man walking with guide dog in subway — Stock Photo
    Blind man walking with guide dog in subway
    Lobar pneumonia in stage of red hepatisation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of red hepatisation, digital illustration and light micrograph.
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    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
    3d illustration of antibodies attacking virus particles in bloodstream. — Stock Photo
    3d illustration of antibodies attacking virus particles in bloodstream.
    Illustration of antibodies (purple) responding to an infection with the SARS-CoV-2 coronavirus (center) — Stock Photo
    Illustration of antibodies (purple) responding to an infection with the SARS-CoV-2 coronavirus (center)
    T-cells (turquoise) surrounding a tumour (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) surrounding a tumour (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
    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
    Illustration of antibodies (y-shaped) responding to an infection with the new coronavirus SARS-CoV-2 (sphere) — Stock Photo
    Illustration of antibodies (y-shaped) responding to an infection with the new coronavirus SARS-CoV-2 (sphere)
    Firefighter with his back turned in the locker room near a row of metal lockers with helmets on top and orange uniform hanging down — Stock Photo
    Firefighter with his back turned in the locker room near a row of metal lockers with helmets on top and orange uniform hanging down
    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple. — Stock Photo
    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple.
    Used protective mask on beach washed by sea wave showing concept of environmental pollution with medical waste — Stock Photo
    Used protective mask on beach washed by sea wave showing concept of environmental pollution with medical waste
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Antibodies attacking influenza viruses — Stock Photo
    Antibodies attacking influenza viruses
    RNA vaccine, conceptual illustration. molecule of RNA (ribonucleic acid, blue helix) is being injected at right. RNA is taken up and read by body cells, causing them to produce copies of viral proteins (red) — Stock Photo
    RNA vaccine, conceptual illustration. molecule of RNA (ribonucleic acid, blue helix) is being injected at right. RNA is taken up and read by body cells, causing them to produce copies of viral proteins (red)
    Illustration of antigen-presenting cell activity of dendritic cells through membrane-bound histocompatibility complex molecules. — Stock Photo
    Illustration of antigen-presenting cell activity of dendritic cells through membrane-bound histocompatibility complex molecules.
    Illustration of antibodies (purple) responding to an infection with the SARS-CoV-2 coronavirus (center) — Stock Photo
    Illustration of antibodies (purple) responding to an infection with the SARS-CoV-2 coronavirus (center)
    Lobar pneumonia in stage of grey hepatisation, conceptual digital illustration. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation, conceptual digital illustration.
    Lobar pneumonia in stage of red hepatisation, conceptual digital illustration. — Stock Photo
    Lobar pneumonia in stage of red hepatisation, conceptual digital illustration.
    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
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Illustration of antibodies attacking influenza virus. — Stock Photo
    Illustration of antibodies attacking influenza virus.
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    White blood cell — Stock Photo
    White blood cell
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Eosinophil white blood cells in blood vessel, digital illustration showing lobed nuclei. — Stock Photo
    Eosinophil white blood cells in blood vessel, digital illustration showing lobed nuclei.
    Normal White blood cell — Stock Photo
    Normal White blood cell
    Crop anonymous activist in protective gloves putting garbage into big trash bag while cleaning riverside in summer nature — Stock Photo
    Crop anonymous activist in protective gloves putting garbage into big trash bag while cleaning riverside in summer nature
    Plasma cell and antibodies — Stock Photo
    Plasma cell and antibodies
    Human red blood cells — Stock Photo
    Human red blood cells
    Team of activists constructing wooden nesting boxes while gathering together in summer park — Stock Photo
    Team of activists constructing wooden nesting boxes while gathering together in summer park
    Back view male in medical mask walking through automatic card reader with dog in metro — Stock Photo
    Back view male in medical mask walking through automatic card reader with dog in metro
    Alveolar tissue macrophage, digital illustration. — Stock Photo
    Alveolar tissue macrophage, digital illustration.
    Group of social active children with man volunteer collecting garbage into trash bag during environmental campaign in summer nature — Stock Photo
    Group of social active children with man volunteer collecting garbage into trash bag during environmental campaign in summer nature
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Red interleukin cells binding to blue receptor, digital illustration. — Stock Photo
    Red interleukin cells binding to blue receptor, digital illustration.
    Pathogenic bacteria in the blood stream — Stock Photo
    Pathogenic bacteria in the blood stream
    Crop anonymous activist in blue shirt and green rubber gloves carrying garbage bag while collecting trash in green park in summer day — Stock Photo
    Crop anonymous activist in blue shirt and green rubber gloves carrying garbage bag while collecting trash in green park in summer day
    White blood cell — Stock Photo
    White blood cell
    Activation of T-cell immune response, illustration. — Stock Photo
    Activation of T-cell immune response, illustration.
    Dirty used medical masks on sandy beach showing concept of pollution with plastic waste — Stock Photo
    Dirty used medical masks on sandy beach showing concept of pollution with plastic waste
    Illustration of antibodies against SARS-CoV-2 virus that causes Covid-19 inside person wearing face mask. antibodies have been produced by body after vaccination, giving recipient immunity to disease — Stock Photo
    Illustration of antibodies against SARS-CoV-2 virus that causes Covid-19 inside person wearing face mask. antibodies have been produced by body after vaccination, giving recipient immunity to disease
    Lobar pneumonia in stage of red hepatisation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of red hepatisation, digital illustration and light micrograph.
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph.
    A male lion (Panthera leo) showing the Flehmen response by opening his mouth wide roaring. Serengeti National Park; Tanzania — Stock Photo
    A male lion (Panthera leo) showing the Flehmen response by opening his mouth wide roaring. Serengeti National Park; Tanzania