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    Dendritic cell presenting antigen to T cell, computer illustration. Dendritic cells play a crucial role in initiating immune responses against viruses. They recognise incoming viruses and present their antigens to T cells. — Stock Photo
    Dendritic cell presenting antigen to T cell, computer illustration. Dendritic cells play a crucial role in initiating immune responses against viruses. They recognise incoming viruses and present their antigens to T cells.
    Healthy female vascular system, computer illustration — Stock Photo
    Healthy female vascular system, computer illustration
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration. — Stock Photo
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration.
    Eosinophil white blood cell, digital illustration. — Stock Photo
    Eosinophil white blood cell, digital illustration.
    Red blood cells — Stock Photo
    Red blood cells
    Illustration of eosinophil white blood cell with purple lobed nuclei. — Stock Photo
    Illustration of eosinophil white blood cell with purple lobed nuclei.
    Paramedics examining injured girl on street — Stock Photo
    Paramedics examining injured girl on street
    Male shoulder anatomy, digital illustration. — Stock Photo
    Male shoulder anatomy, digital illustration.
    3d rendered illustration of little tick on skin surface. — Stock Photo
    3d rendered illustration of little tick on skin surface.
    Illustration of heart in male body silhouette on black background. — Stock Photo
    Illustration of heart in male body silhouette on black background.
    Female upper body anatomy and internal organs, computer illustration. — Stock Photo
    Female upper body anatomy and internal organs, computer illustration.
    Anatomy of human abdominal vein system — Stock Photo
    Anatomy of human abdominal vein system
    Human body model showing male anatomy and blood vessels, digital illustration. — Stock Photo
    Human body model showing male anatomy and blood vessels, digital illustration.
    Crop anonymous vet doctor with syringe taking blood sample from cat during examination in veterinary clinic — Stock Photo
    Crop anonymous vet doctor with syringe taking blood sample from cat during examination in veterinary clinic
    Man holding a heart, computer illustration. — Stock Photo
    Man holding a heart, computer illustration.
    Illustration of malaria infected blood cells. — Stock Photo
    Illustration of malaria infected blood cells.
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Atherosclerosis and narrowed artery — Stock Photo
    Atherosclerosis and narrowed artery
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Blood orange wedges — Stock Photo
    Blood orange wedges
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Female upper body blood vessels, digital illustration. — Stock Photo
    Female upper body blood vessels, digital illustration.
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    Plasmodium vivax protozoa inside blood vessel, digital illustration. — Stock Photo
    Plasmodium vivax protozoa inside blood vessel, digital illustration.
    Illustration of heart in transparent male silhouette. — Stock Photo
    Illustration of heart in transparent male silhouette.
    SARS-CoV-2 viruses and activated neutrophil, conceptual computer illustration — Stock Photo
    SARS-CoV-2 viruses and activated neutrophil, conceptual computer illustration
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    Illustration of stent inside of human fatty artery. — Stock Photo
    Illustration of stent inside of human fatty artery.
    Close-up shot of surgeon in operating room at work — Stock Photo
    Close-up shot of surgeon in operating room at work
    Illustration of tick parasite crawling on human skin surface. — Stock Photo
    Illustration of tick parasite crawling on human skin surface.
    3d rendered illustration of colored female heart in body silhouette. — Stock Photo
    3d rendered illustration of colored female heart in body silhouette.
    Close-up shot of delicious Moro blood oranges — Stock Photo
    Close-up shot of delicious Moro blood oranges
    Platelets in human blood, computer illustration. — Stock Photo
    Platelets in human blood, computer illustration.
    Turtle with beautiful tortoise shell on grey stones — Stock Photo
    Turtle with beautiful tortoise shell on grey stones
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma
    HIV human immunodeficiency virus in bloodstream, digital illustration — Stock Photo
    HIV human immunodeficiency virus in bloodstream, digital illustration
    Digital illustration of trypanosome parasite in blood causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasite in blood causing Chagas disease.
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration. — Stock Photo
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration.
    Doctor practicing chest compression on cardiopulmonary resuscitation training dummy. — Stock Photo
    Doctor practicing chest compression on cardiopulmonary resuscitation training dummy.
    Female upper body anatomy and internal organs, computer illustration. — Stock Photo
    Female upper body anatomy and internal organs, computer illustration.
    From above of crop anonymous female donor with patch on hand sitting in medical chair after blood transfusion procedure — Stock Photo
    From above of crop anonymous female donor with patch on hand sitting in medical chair after blood transfusion procedure
    Close-up of sliced red meat at butchers shop — Stock Photo
    Close-up of sliced red meat at butchers shop
    Paramedics examining injured girl on street — Stock Photo
    Paramedics examining injured girl on street
    Activated platelet cells — Stock Photo
    Activated platelet cells
    Anatomy of human skin — Stock Photo
    Anatomy of human skin
    Human body model showing male anatomy and blood vessels, digital illustration. — Stock Photo
    Human body model showing male anatomy and blood vessels, digital illustration.
    First-aiders practicing cardiopulmonary resuscitation on training dummy. — Stock Photo
    First-aiders practicing cardiopulmonary resuscitation on training dummy.
    Atherosclerosis harming blood vessel — Stock Photo
    Atherosclerosis harming blood vessel
    Measuring oxygen saturation in blood with pulse oximeter. — Stock Photo
    Measuring oxygen saturation in blood with pulse oximeter.
    Closeup view of blood orange salad with yogurt on white plate — Stock Photo
    Closeup view of blood orange salad with yogurt on white plate
    Shoulder blood supply — Stock Photo
    Shoulder blood supply
    Petri dishes for DNA sequencing, close-up. — Stock Photo
    Petri dishes for DNA sequencing, close-up.
    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.
    Physiotherapist checking blood pressure of senior woman at home — Stock Photo
    Physiotherapist checking blood pressure of senior woman at home
    Platelets in human blood, computer illustration. — Stock Photo
    Platelets in human blood, computer illustration.
    Whole and half blood oranges — Stock Photo
    Whole and half blood oranges
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Close-up of pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of pipetting blood sample into microcentrifuge tubes.
    Megakaryocyte in human blood, computer illustration. — Stock Photo
    Megakaryocyte in human blood, computer illustration.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.