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    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Illustration of clot of human blood cells. — Stock Photo
    Illustration of clot of human blood cells.
    Vascular anatomy of head and neck — Stock Photo
    Vascular anatomy of head and neck
    Illustration of human blood cells in blood stream. — Stock Photo
    Illustration of human blood cells in blood stream.
    View of Heart anatomy — Stock Photo
    View of Heart anatomy
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red).
    Liver tissue, light micrograph. Animal tissue. — Stock Photo
    Liver tissue, light micrograph. Animal tissue.
    Blood supply of neck and head — Stock Photo
    Blood supply of neck and head
    Crop female medical specialist in latex gloves performing injection with syringe to anonymous patient during procedure of blood transfusion in hospital — Stock Photo
    Crop female medical specialist in latex gloves performing injection with syringe to anonymous patient during procedure of blood transfusion in hospital
    Digital illustration of blue bacteria in bloodstream. — Stock Photo
    Digital illustration of blue bacteria in bloodstream.
    Normal blood vessels, X-ray — Stock Photo
    Normal blood vessels, X-ray
    Fat in blood cells blocking blood vessel, digital illustration. — Stock Photo
    Fat in blood cells blocking blood vessel, digital illustration.
    Crop unrecognizable medic with needle and syringe collecting blood from vein of patient in hospital — Stock Photo
    Crop unrecognizable medic with needle and syringe collecting blood from vein of patient in hospital
    Human heart anatomy — Stock Photo
    Human heart anatomy
    Illustration of group of cells in blood clot. — Stock Photo
    Illustration of group of cells in blood clot.
    3d rendered illustration of human heart. — Stock Photo
    3d rendered illustration of human heart.
    Medical illustration of arteries, veins and lymphatic system in female midsection — Stock Photo
    Medical illustration of arteries, veins and lymphatic system in female midsection
    3d rendered illustration of heart attack on white background. — Stock Photo
    3d rendered illustration of heart attack on white background.
    Ebola virus particles in blood, digital illustration. — Stock Photo
    Ebola virus particles in blood, digital illustration.
    Close-up of a ladybug on a leaf, Indonesia — Stock Photo
    Close-up of a ladybug on a leaf, Indonesia
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    3D rendering of human circulatory system on black background — Stock Photo
    3D rendering of human circulatory system on black background
    3d illustration of cross-section of human eye in side view and frontal view. — Stock Photo
    3d illustration of cross-section of human eye in side view and frontal view.
    Illustration of female silhouette with highlighted heart. — Stock Photo
    Illustration of female silhouette with highlighted heart.
    Illustration of clot of human blood cells. — Stock Photo
    Illustration of clot of human blood cells.
    Illustration of human heart in body silhouette. — Stock Photo
    Illustration of human heart in body silhouette.
    Texture of dry fallen yellow autumn leaf with thin veins and stem against blurred gray background — Stock Photo
    Texture of dry fallen yellow autumn leaf with thin veins and stem against blurred gray background
    Coconut octopus on reef — Stock Photo
    Coconut octopus on reef
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    Anatomy of human salivary glands — Stock Photo
    Anatomy of human salivary glands
    Illustration of blue liquid injected into bloodstream with syringe seen from inside with blood and green virus cells. — Stock Photo
    Illustration of blue liquid injected into bloodstream with syringe seen from inside with blood and green virus cells.
    Brownish coconut octopus — Stock Photo
    Brownish coconut octopus
    Close Up Of A Taro Leaf; Maui, Hawaii, United States Of America — Stock Photo
    Close Up Of A Taro Leaf; Maui, Hawaii, United States Of America
    Texture of dry fallen orange autumn leaf with thin veins and stem against blurred gray background — Stock Photo
    Texture of dry fallen orange autumn leaf with thin veins and stem against blurred gray background
    Illustration of heart in silhouette of female body. — Stock Photo
    Illustration of heart in silhouette of female body.
    Silhouette of a Baby Flying gecko through a leaf, Indonesia — Stock Photo
    Silhouette of a Baby Flying gecko through a leaf, Indonesia
    Medical nanorobot in human blood vessel, panoramic digital illustration. — Stock Photo
    Medical nanorobot in human blood vessel, panoramic digital illustration.
    Illustration of blue silhouette of obese woman with highlighted heart. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted heart.
    Transparent human body with internal organs, lymphatic and circulatory systems — Stock Photo
    Transparent human body with internal organs, lymphatic and circulatory systems
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Illustration of human blood cells in blood stream. — Stock Photo
    Illustration of human blood cells in blood stream.
    Illustration of transparent blue silhouette of male body with colored heart. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored heart.
    3d illustration of constricted and narrowed artery while arteriosclerosis. — Stock Photo
    3d illustration of constricted and narrowed artery while arteriosclerosis.
    Illustration of two bypasses in human heart. — Stock Photo
    Illustration of two bypasses in human heart.
    Top view of whole and cut figs with juicy pulp on green foliage with veins on wooden surface — Stock Photo
    Top view of whole and cut figs with juicy pulp on green foliage with veins on wooden surface
    Cardiovascular system transporting nutrients and oxygen — Stock Photo
    Cardiovascular system transporting nutrients and oxygen
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems — Stock Photo
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems
    Illustration of female silhouette with painful heart. — Stock Photo
    Illustration of female silhouette with painful heart.
    Illustration of heart in male body silhouette on black background. — Stock Photo
    Illustration of heart in male body silhouette on black background.
    Focused child with green plant leaf looking through magnifying glass in woods on blurred background — Stock Photo
    Focused child with green plant leaf looking through magnifying glass in woods on blurred background
    Illustration of heart tumour in male body silhouette on black background. — Stock Photo
    Illustration of heart tumour in male body silhouette on black background.
    Illustration of kidney cancer on white background. — Stock Photo
    Illustration of kidney cancer on white background.
    Digital illustration of abnormal white blood cells B-lymphocytes while hairy cell leukaemia. — Stock Photo
    Digital illustration of abnormal white blood cells B-lymphocytes while hairy cell leukaemia.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Male vascular system — Stock Photo
    Male vascular system
    Illustration of heart in transparent male silhouette. — Stock Photo
    Illustration of heart in transparent male silhouette.
    Red autumn foliage, close up shot — Stock Photo
    Red autumn foliage, close up shot
    Crop anonymous female volunteer giving blood for save life in modern blood transfusion center — Stock Photo
    Crop anonymous female volunteer giving blood for save life in modern blood transfusion center
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Close-up of frost on an autumn leaf, Bulgaria — Stock Photo
    Close-up of frost on an autumn leaf, Bulgaria