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    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Black pudding and liver sausage — Stock Photo
    Black pudding and liver sausage
    Female vascular system, computer illustration. — Stock Photo
    Female vascular system, computer illustration.
    Physician checking senior man donating blood in blood bank — Stock Photo
    Physician checking senior man donating blood in blood bank
    Human ovary structure — Stock Photo
    Human ovary structure
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil blood cell. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil blood cell.
    Human heart anatomy — Stock Photo
    Human heart anatomy
    Close-up of vital signs of patient on monitor in intensive care ward. — Stock Photo
    Close-up of vital signs of patient on monitor in intensive care ward.
    Grey human heart model on white background, computer illustration. — Stock Photo
    Grey human heart model on white background, computer illustration.
    Activated platelets in blood flow, illustration. — Stock Photo
    Activated platelets in blood flow, illustration.
    Human heart model on blue background, computer illustration. — Stock Photo
    Human heart model on blue background, computer illustration.
    Human blood cells — Stock Photo
    Human blood cells
    3d illustrations of the human heart with lines demonstrating blood flow. — Stock Photo
    3d illustrations of the human heart with lines demonstrating blood flow.
    Red blood cells — Stock Photo
    Red blood cells
    Vascular system in obese female body, digital illustration — Stock Photo
    Vascular system in obese female body, digital illustration
    3d illustration showing increase of non-functional white blood cells in leukaemia. — Stock Photo
    3d illustration showing increase of non-functional white blood cells in leukaemia.
    Close-up of human blood and various medical samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human blood and various medical samples in test tubes while screening in medical lab.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Low angle rear view of human silhouette showing male anatomy, digital illustration. — Stock Photo
    Low angle rear view of human silhouette showing male anatomy, digital illustration.
    Digital illustration showing abundant lymphoblast cells in human blood in acute lymphoblastic leukaemia. — Stock Photo
    Digital illustration showing abundant lymphoblast cells in human blood in acute lymphoblastic leukaemia.
    Human heart with colored superior vena cava, computer illustration. — Stock Photo
    Human heart with colored superior vena cava, computer illustration.
    Cardiovascular system transporting nutrients and oxygen — Stock Photo
    Cardiovascular system transporting nutrients and oxygen
    Sportswoman with curvy body with heart rate on wearable tracker during workout on street while looking away — Stock Photo
    Sportswoman with curvy body with heart rate on wearable tracker during workout on street while looking away
    Red blood cells on white background, digital illustration. — Stock Photo
    Red blood cells on white background, digital illustration.
    Forensics expert examining with flashlight evidence glass of wine at crime scene. — Stock Photo
    Forensics expert examining with flashlight evidence glass of wine at crime scene.
    Close-up of physiotherapist checking blood pressure of senior woman — Stock Photo
    Close-up of physiotherapist checking blood pressure of senior woman
    Molecules of insulin circulating in the blood stream — Stock Photo
    Molecules of insulin circulating in the blood stream
    Front view of thoughtful mixed-race female patient lying in bed while pulse oximetry measures oxygen saturation in the blood in ward at hospital. — Stock Photo
    Front view of thoughtful mixed-race female patient lying in bed while pulse oximetry measures oxygen saturation in the blood in ward at hospital.
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Raw meat on metallic table at meat factory — Stock Photo
    Raw meat on metallic table at meat factory
    Blood stream and artery walls — Stock Photo
    Blood stream and artery walls
    Laboratory technician interacting with each other in blood bank — Stock Photo
    Laboratory technician interacting with each other in blood bank
    Kidney glomeruli, coloured scanning electron micrograph (SEM). — Stock Photo
    Kidney glomeruli, coloured scanning electron micrograph (SEM).
    Light micrograph of hepatic hemosiderosis. Hemosiderosis is a form of iron overload disorder resulting in the accumulation of hemosiderin. Haematoxylin and eosin stain. — Stock Photo
    Light micrograph of hepatic hemosiderosis. Hemosiderosis is a form of iron overload disorder resulting in the accumulation of hemosiderin. Haematoxylin and eosin stain.
    3d rendered illustration of biker heart on black background. — Stock Photo
    3d rendered illustration of biker heart on black background.
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Sickle cell anaemia — Stock Photo
    Sickle cell anaemia
    Female abdominal organs, computer illustration. — Stock Photo
    Female abdominal organs, computer illustration.
    Blood vessels of the head, computer illustration — Stock Photo
    Blood vessels of the head, computer illustration
    Human bronchi and heart, illustration — Stock Photo
    Human bronchi and heart, illustration
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body — Stock Photo
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body
    Close-up shot of delicious Blood oranges — Stock Photo
    Close-up shot of delicious Blood oranges
    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital illustration.
    White blood cell, digital illustration. — Stock Photo
    White blood cell, digital illustration.
    Heart disease in female body, conceptual digital illustration. — Stock Photo
    Heart disease in female body, conceptual digital illustration.
    Homemade blood orange smoothies — Stock Photo
    Homemade blood orange smoothies
    Digital illustration of trypanosome parasite in blood causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasite in blood causing Chagas disease.
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Woman with bloody makeup wearing fantasy clothes and crown — Stock Photo
    Woman with bloody makeup wearing fantasy clothes and crown
    3d illustration showing increase of non-functional white blood cells in leukaemia. — Stock Photo
    3d illustration showing increase of non-functional white blood cells in leukaemia.
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Senior woman using blood pressure meter. — Stock Photo
    Senior woman using blood pressure meter.
    Human brain with network of blood vessels — Stock Photo
    Human brain with network of blood vessels
    Plasmodium vivax protozoan inside red blood cells, digital illustration. — Stock Photo
    Plasmodium vivax protozoan inside red blood cells, digital illustration.
    Mid section of businessman checking blood sugar with glucometer in office — Stock Photo
    Mid section of businessman checking blood sugar with glucometer in office
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Donated blood in plastic bag — Stock Photo
    Donated blood in plastic bag
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    African American male doctor in medical glove demonstrating test tube with blood sample on white background — Stock Photo
    African American male doctor in medical glove demonstrating test tube with blood sample on white background