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    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Centrifuging blood samples with barcodes, digital illustration. — Stock Photo
    Centrifuging blood samples with barcodes, digital illustration.
    Blood vessels of human head and neck, digital illustration. — Stock Photo
    Blood vessels of human head and neck, digital illustration.
    Petri dishes with blood agar on blue background. — Stock Photo
    Petri dishes with blood agar on blue background.
    3d rendered illustration of colored female heart in body silhouette. — Stock Photo
    3d rendered illustration of colored female heart in body silhouette.
    Rack of test tubes with blood samples on blue background. — Stock Photo
    Rack of test tubes with blood samples on blue background.
    Human heart model on blue background, computer illustration. — Stock Photo
    Human heart model on blue background, computer illustration.
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea
    Male head and neck anatomy, digital illustration. — Stock Photo
    Male head and neck anatomy, digital illustration.
    Medical illustration of arteries, veins and lymphatic system with heart — Stock Photo
    Medical illustration of arteries, veins and lymphatic system with heart
    Professional medical equipment — Stock Photo
    Professional medical equipment
    Anatomy of human neck — Stock Photo
    Anatomy of human neck
    Illustration of transparent blue silhouette of male body with colored heart. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored heart.
    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.
    Illustration of blue silhouette of obese woman with highlighted heart on white background. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted heart on white background.
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Illustration of human silhouette with inflamed heart. — Stock Photo
    Illustration of human silhouette with inflamed heart.
    White blood cell, digital illustration. — Stock Photo
    White blood cell, digital illustration.
    Cardiovascular system and blood vessels — Stock Photo
    Cardiovascular system and blood vessels
    Medical illustration of female body with digestive and circulatory systems — Stock Photo
    Medical illustration of female body with digestive and circulatory systems
    Vascular system of female human head, computer illustration. — Stock Photo
    Vascular system of female human head, computer illustration.
    Circulatory system and blood supply — Stock Photo
    Circulatory system and blood supply
    3d rendered illustration of blue silhouette of man with chest pain. — Stock Photo
    3d rendered illustration of blue silhouette of man with chest pain.
    Corella bird walking along a fence (Cacatua sanguinea), Perth, Western Australia, Australia — Stock Photo
    Corella bird walking along a fence (Cacatua sanguinea), Perth, Western Australia, Australia
    Female cardiovascular system on black background. — Stock Photo
    Female cardiovascular system on black background.
    Male anatomy showing vascular system, computer illustration. — Stock Photo
    Male anatomy showing vascular system, computer illustration.
    Agar plate and specimen brush on blue background. — Stock Photo
    Agar plate and specimen brush on blue background.
    3d rendered illustration of colored female heart in body silhouette. — Stock Photo
    3d rendered illustration of colored female heart in body silhouette.
    Human midsection with internal organs — Stock Photo
    Human midsection with internal organs
    Illustration of human heart anatomy on blue background. — Stock Photo
    Illustration of human heart anatomy on blue background.
    Human upper body blood vessels, digital illustration. — Stock Photo
    Human upper body blood vessels, digital illustration.
    Medical illustration of head arteries, veins and lymphatic system — Stock Photo
    Medical illustration of head arteries, veins and lymphatic system
    Illustration on black of silhouette of obese woman with highlighted heart. — Stock Photo
    Illustration on black of silhouette of obese woman with highlighted heart.
    Vascular system of female upper body, computer illustration. — Stock Photo
    Vascular system of female upper body, computer illustration.
    Female upper body anatomy and internal organs, computer illustration. — Stock Photo
    Female upper body anatomy and internal organs, computer illustration.
    3d rendered illustration of blue silhouette of man with chest pain. — Stock Photo
    3d rendered illustration of blue silhouette of man with chest pain.
    3d rendered illustration of colored female heart in body silhouette. — Stock Photo
    3d rendered illustration of colored female heart in body silhouette.
    Female back anatomy and blood vessels, computer illustration. — Stock Photo
    Female back anatomy and blood vessels, computer illustration.
    Blood sample in tube on blue background. — Stock Photo
    Blood sample in tube on blue background.
    Upper-body anatomy of adult male — Stock Photo
    Upper-body anatomy of adult male
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Arteries in transparent dog body, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, anatomical computer illustration.
    Human upper body blood vessels, digital illustration. — Stock Photo
    Human upper body blood vessels, digital illustration.
    Red sea water of Hormuz Island — Stock Photo
    Red sea water of Hormuz Island
    Anatomy of heart interior with labels — Stock Photo
    Anatomy of heart interior with labels
    Illustration of heart in silhouette of female body. — Stock Photo
    Illustration of heart in silhouette of female body.
    Male vascular system — Stock Photo
    Male vascular system
    Male body with visible vascular system, computer illustration. — Stock Photo
    Male body with visible vascular system, computer illustration.
    Male vascular system — Stock Photo
    Male vascular system
    From above coronavirus negative and positive blood test near vaccine flask and syringe on blue background — Stock Photo
    From above coronavirus negative and positive blood test near vaccine flask and syringe on blue background
    Structural anatomy of human arm — Stock Photo
    Structural anatomy of human arm
    Vascular system of female human head, computer illustration. — Stock Photo
    Vascular system of female human head, computer illustration.
    Medical illustration of female breast arteries, veins and lymphatic system — Stock Photo
    Medical illustration of female breast arteries, veins and lymphatic system
    Female cardiovascular system on white background. — Stock Photo
    Female cardiovascular system on white background.
    Hepatitis C virus structure, digital illustration. — Stock Photo
    Hepatitis C virus structure, digital illustration.
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma
    Transparent female body silhouette with yellow colored spleen, digital illustration. — Stock Photo
    Transparent female body silhouette with yellow colored spleen, digital illustration.
    Illustration of heart in silhouette of female body. — Stock Photo
    Illustration of heart in silhouette of female body.
    Veins in transparent dog body, anatomical computer illustration. — Stock Photo
    Veins in transparent dog body, anatomical computer illustration.
    Shoulder blood supply — Stock Photo
    Shoulder blood supply