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    Mast cell releasing histamine during allergic response, digital illustration. — Stock Photo
    Mast cell releasing histamine during allergic response, 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)
    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
    Blind man walking with guide dog in subway — Stock Photo
    Blind man walking with guide dog in subway
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Neutrophil is a granulocyte, a part of the innate immune system. — Stock Photo
    Neutrophil is a granulocyte, a part of the innate immune system.
    Close-up of a macrophage, illustration. — Stock Photo
    Close-up of a macrophage, illustration.
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    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.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, 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
    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
    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
    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 (sphere) — Stock Photo
    Illustration of antibodies (y-shaped) responding to an infection with the new coronavirus SARS-CoV-2 (sphere)
    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
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    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
    Eosinophilia blood smear with numerous eosinophils, digital illustration. — Stock Photo
    Eosinophilia blood smear with numerous eosinophils, digital illustration.
    Young curly haired Hispanic female on red fabric protective mask for coronavirus prevention while spending summer day on street looking at camera — Stock Photo
    Young curly haired Hispanic female on red fabric protective mask for coronavirus prevention while spending summer day on street looking at camera
    Activated macrophage attacking bacteria — Stock Photo
    Activated macrophage attacking bacteria
    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.
    Close-up of a macrophage, illustration. — Stock Photo
    Close-up of a macrophage, illustration.
    Side view of unrecognizable female volunteer in blue shirt with backpack exploring nature through binoculars during eco campaign in summer forest — Stock Photo
    Side view of unrecognizable female volunteer in blue shirt with backpack exploring nature through binoculars during eco campaign in summer forest
    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
    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
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Crop anonymous activist in protective gloves picking plastic bottle from ground while collecting garbage in nature — Stock Photo
    Crop anonymous activist in protective gloves picking plastic bottle from ground while collecting garbage in nature
    Illustration of antibodies (red and blue) responding to an infection with the new coronavirus SARS-CoV-2 (red) — Stock Photo
    Illustration of antibodies (red and blue) responding to an infection with the new coronavirus SARS-CoV-2 (red)
    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.
    From above of folded jeans with white protective mask in pocket and car keys placed on white background in light studio — Stock Photo
    From above of folded jeans with white protective mask in pocket and car keys placed on white background in light studio
    Green rubber gloves placed on table near heap of trash bags during environmental clean up campaign in summer park — Stock Photo
    Green rubber gloves placed on table near heap of trash bags during environmental clean up campaign in summer park
    Close-up of 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
    Close-up of 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
    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)
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    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.
    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)
    Immune response to cancer — Stock Photo
    Immune response to cancer
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    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
    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.
    Eosinophilia blood smear with numerous eosinophils, digital illustration. — Stock Photo
    Eosinophilia blood smear with numerous eosinophils, digital illustration.
    Firemen dousing burning building, British Columbia, Canada. — Stock Photo
    Firemen dousing burning building, British Columbia, Canada.
    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.
    Computer illustration of amyloid plaques (yellow) amongst neurons. — Stock Photo
    Computer illustration of amyloid plaques (yellow) amongst neurons.
    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, conceptual digital illustration. — Stock Photo
    Lobar pneumonia in stage of red hepatisation, conceptual digital illustration.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    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
    Pathogenic bacteria in the blood stream — Stock Photo
    Pathogenic bacteria in the blood stream
    Man in protective mask with handmade wooden nesting box communicating with group of children volunteers gathering together in summer park — Stock Photo
    Man in protective mask with handmade wooden nesting box communicating with group of children volunteers gathering together in summer park
    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
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Crop anonymous volunteer in protective gloves collecting trash from riverside while gathering with friends in summer nature — Stock Photo
    Crop anonymous volunteer in protective gloves collecting trash from riverside while gathering with friends in summer nature
    Side view of saleswoman in protective mask in shop with bottling eco detergents pouring cleanser while preparing order of client at counter — Stock Photo
    Side view of saleswoman in protective mask in shop with bottling eco detergents pouring cleanser while preparing order of client at counter
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.