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    Eosinophilia blood smear with numerous eosinophils, digital illustration. — Stock Photo
    Eosinophilia blood smear with numerous eosinophils, digital illustration.
    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)
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    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
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    Illustration of antibodies (y-shaped) responding to an infection with the new coronavirus SARS-CoV-2 — Stock Photo
    Illustration of antibodies (y-shaped) responding to an infection with the new coronavirus SARS-CoV-2
    Low angle of handmade wooden nesting box attached to trunk of green tree in summer nature — Stock Photo
    Low angle of handmade wooden nesting box attached to trunk of green tree in summer nature
    High angle of used dirty protective mask on sandy shore showing concept of environmental pollution — Stock Photo
    High angle of used dirty protective mask on sandy shore showing concept of environmental pollution
    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.
    Activated macrophage attacking bacteria — Stock Photo
    Activated macrophage attacking bacteria
    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
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Human red blood cells — Stock Photo
    Human red blood cells
    White blood cell — Stock Photo
    White blood cell
    Illustration of eosinophil white blood cell with purple lobed nuclei. — Stock Photo
    Illustration of eosinophil white blood cell with purple lobed nuclei.
    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.
    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
    Side view of female buyer in medical mask shopping in store with various homemade organic soap — Stock Photo
    Side view of female buyer in medical mask shopping in store with various homemade organic soap
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    Antibodies binding influenza virus. Illustration of human antibodies (orange) neutralizing a influenza virus particle (blue). Each Y-shaped molecule has two arms that can bind to specific antigens — Stock Photo
    Antibodies binding influenza virus. Illustration of human antibodies (orange) neutralizing a influenza virus particle (blue). Each Y-shaped molecule has two arms that can bind to specific antigens
    Computer illustration of mast cell secreting biologically active compounds near cancer tumour. — Stock Photo
    Computer illustration of mast cell secreting biologically active compounds near cancer tumour.
    Full body of male in medical mask walking through automatic card reader with dog in metro — Stock Photo
    Full body of male in medical mask walking through automatic card reader with dog in metro
    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
    Activation of T-cell immune response, illustration. — Stock Photo
    Activation of T-cell immune response, illustration.
    Illustration of person being vaccinated against Covid-19. injection has stimulated production of different antibodies against proteins on SARS-CoV-2 virus causes Covid-19 — Stock Photo
    Illustration of person being vaccinated against Covid-19. injection has stimulated production of different antibodies against proteins on SARS-CoV-2 virus causes Covid-19
    Back view of shirtless man sitting on plastic chair near store at street scene — Stock Photo
    Back view of shirtless man sitting on plastic chair near store at street scene
    Illustration of a dendritic cell, a type of white blood cell that is a component of the body's 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
    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
    White blood cell — Stock Photo
    White blood cell
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    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.
    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 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
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    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.
    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.
    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)
    Normal White blood cell — Stock Photo
    Normal White blood cell
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Activation of T-cell immune response, illustration. — Stock Photo
    Activation of T-cell immune response, illustration.
    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.
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Female seller in protective mask giving advice to client choosing eco friendly metal bottle in store — Stock Photo
    Female seller in protective mask giving advice to client choosing eco friendly metal bottle in store
    Blind man walking with guide dog in subway — Stock Photo
    Blind man walking with guide dog in subway
    Unrecognizable volunteers distributing protective gloves for participants gathering in green summer forest and collecting garbage — Stock Photo
    Unrecognizable volunteers distributing protective gloves for participants gathering in green summer forest and collecting garbage
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Female customer in protective mask consulting with saleswoman working in store with different bunches of flowers wrapped in zero waste paper package — Stock Photo
    Female customer in protective mask consulting with saleswoman working in store with different bunches of flowers wrapped in zero waste paper package
    Lobar pneumonia in stage of grey hepatisation, conceptual digital illustration. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation, conceptual digital illustration.
    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.
    Back view of female buyer in medical mask talking to saleswoman while standing near shelf with organic soap — Stock Photo
    Back view of female buyer in medical mask talking to saleswoman while standing near shelf with organic soap
    Antibodies attacking coronavirus particle, illustration. — Stock Photo
    Antibodies attacking coronavirus particle, illustration.
    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)
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    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
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    RNA vaccine, conceptual illustration. molecule of RNA (ribonucleic acid, blue helix) is being injected at right. The 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. The RNA is taken up and read by body cells, causing them to produce copies of viral proteins (red)
    Large blue garbage bags placed near lake during clean up environmental volunteer campaign in summer nature — Stock Photo
    Large blue garbage bags placed near lake during clean up environmental volunteer campaign in summer nature
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.