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    Blood oxygen monitor on finger of patient in intensive care ward. — Stock Photo
    Blood oxygen monitor on finger of patient in intensive care ward.
    Doctor practicing chest compression on cardiopulmonary resuscitation training dummy. — Stock Photo
    Doctor practicing chest compression on cardiopulmonary resuscitation training dummy.
    Elevated view of Horned Lizard Basking in sun — Stock Photo
    Elevated view of Horned Lizard Basking in sun
    3d rendered illustration of blue silhouette of man with chest pain. — Stock Photo
    3d rendered illustration of blue silhouette of man with chest pain.
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    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.
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Human leg structural anatomy — Stock Photo
    Human leg structural anatomy
    Crop anonymous doctor in medical glove demonstrating syringe with blood on white background — Stock Photo
    Crop anonymous doctor in medical glove demonstrating syringe with blood on white background
    Sliced blood oranges — Stock Photo
    Sliced blood oranges
    Illustration of blue silhouette of obese woman with highlighted heart. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted heart.
    Black pudding slices with apple — Stock Photo
    Black pudding slices with apple
    Illustration of transparent blue silhouette of male body with colored heart. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored heart.
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Male head and neck anatomy and blood vessels, computer illustration. — Stock Photo
    Male head and neck anatomy and blood vessels, computer illustration.
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample. — Stock Photo
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample.
    Illustration of metal artificial heart on white background. — Stock Photo
    Illustration of metal artificial heart on white background.
    Laboratory technicians working together in blood bank — Stock Photo
    Laboratory technicians working together in blood bank
    Mosquito feeding on human blood, digital illustration. — Stock Photo
    Mosquito feeding on human blood, digital illustration.
    Blood clot or thrombus — Stock Photo
    Blood clot or thrombus
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration. — Stock Photo
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration.
    Structure of dog vascular system with colorful blood vessels in transparent body, cropped, computer illustration. — Stock Photo
    Structure of dog vascular system with colorful blood vessels in transparent body, cropped, computer illustration.
    Blood oranges on decorative plates — Stock Photo
    Blood oranges on decorative plates
    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.
    Illustration of cross section of human skin with hair follicles and blood vessels. — Stock Photo
    Illustration of cross section of human skin with hair follicles and blood vessels.
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Veins in transparent dog body, anatomical computer illustration. — Stock Photo
    Veins in transparent dog body, anatomical computer illustration.
    Coloured scanning electron micrograph (SEM) of a section through healthy skin. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through healthy skin.
    Medical illustration of human blood vessels of head. — Stock Photo
    Medical illustration of human blood vessels of head.
    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.
    Male doctor examining female patient on sofa — Stock Photo
    Male doctor examining female patient on sofa
    Digital illustration of senior man anatomy showing heart tumour. — Stock Photo
    Digital illustration of senior man anatomy showing heart tumour.
    Laboratory technician analyzing chemical solution in blood bank — Stock Photo
    Laboratory technician analyzing chemical solution in blood bank
    Snake Smelling On Top Of A Rock — Stock Photo
    Snake Smelling On Top Of A Rock
    3d rendered illustration of vascular system of human head. — Stock Photo
    3d rendered illustration of vascular system of human head.
    Illustration of flowing human blood cells. — Stock Photo
    Illustration of flowing human blood cells.
    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.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    Narrowed artery causing atherosclerosis — Stock Photo
    Narrowed artery causing atherosclerosis
    Single test tube with blood sample. — Stock Photo
    Single test tube with blood sample.
    Illustration of small tick biting human skin. — Stock Photo
    Illustration of small tick biting human skin.
    Crop unrecognizable sportswoman with curvy body watching heart rate on wearable tracker during workout on street — Stock Photo
    Crop unrecognizable sportswoman with curvy body watching heart rate on wearable tracker during workout on street
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Realistic human heart and blood vessels on white background, digital illustration. — Stock Photo
    Realistic human heart and blood vessels on white background, digital illustration.
    Crop anonymous doctor in medical glove demonstrating test tube with blood sample on white background — Stock Photo
    Crop anonymous doctor in medical glove demonstrating test tube with blood sample on white background
    Female silhouette showing heart anatomy, computer illustration. — Stock Photo
    Female silhouette showing heart anatomy, computer illustration.
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Half-full anatomical heart model 3D illustration isolated on white background. — Stock Photo
    Half-full anatomical heart model 3D illustration isolated on white background.
    3d illustration of activated platelets and thrombocytes while healing and closure of wound. — Stock Photo
    3d illustration of activated platelets and thrombocytes while healing and closure of wound.
    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Female body with visible vascular system, digital illustration. — Stock Photo
    Female body with visible vascular system, digital illustration.
    Illustration of healthy heart in human body silhouette. — Stock Photo
    Illustration of healthy heart in human body silhouette.
    Crop unrecognizable woman using modern pulse oximeter on finger of kid for measuring oxygen level in blood — Stock Photo
    Crop unrecognizable woman using modern pulse oximeter on finger of kid for measuring oxygen level in blood
    Panoramic illustration of blood vessel with eosinophilia with numerous eosinophils white blood cells, anti-parasite immune system. — Stock Photo
    Panoramic illustration of blood vessel with eosinophilia with numerous eosinophils white blood cells, anti-parasite immune system.
    Coronary blood vessels in blue human heart model, digital illustration. — Stock Photo
    Coronary blood vessels in blue human heart model, digital illustration.
    Heart anatomy in male thorax, computer illustration. — Stock Photo
    Heart anatomy in male thorax, computer illustration.