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    Male head and neck anatomy and blood vessels, computer illustration. — Stock Photo
    Male head and neck anatomy and blood vessels, computer illustration.
    Doctor giving young girl finger prick test. — Stock Photo
    Doctor giving young girl finger prick test.
    Human heart and its electrical system, 3d illustration. The yellow lines demonstrate the electrical (conduction) system of the heart. The heart at right shows an irregular heartbeat (arrhythmia) and atrial fibrillation. — Stock Photo
    Human heart and its electrical system, 3d illustration. The yellow lines demonstrate the electrical (conduction) system of the heart. The heart at right shows an irregular heartbeat (arrhythmia) and atrial fibrillation.
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration.
    Cardiovascular system in female body, digital illustration. — Stock Photo
    Cardiovascular system in female body, digital illustration.
    Blood agar in Petri dish on blue background. — Stock Photo
    Blood agar in Petri dish on blue background.
    Tick biting skin — Stock Photo
    Tick biting skin
    West Nile virus particles — Stock Photo
    West Nile virus particles
    Ewe and two newborn lambs — Stock Photo
    Ewe and two newborn lambs
    Cropped view of doctor holding vial of blood for testing. — Stock Photo
    Cropped view of doctor holding vial of blood for testing.
    Smooth Green Snake — Stock Photo
    Smooth Green Snake
    Male head and neck anatomy, digital illustration. — Stock Photo
    Male head and neck anatomy, digital illustration.
    Forensics expert collecting blood sample from crime scene. — Stock Photo
    Forensics expert collecting blood sample from crime scene.
    Arrangement of blood oranges — Stock Photo
    Arrangement of blood oranges
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Female upper body anatomy and internal organs, computer illustration. — Stock Photo
    Female upper body anatomy and internal organs, computer illustration.
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    Human heart with coronary blood vessels, illustration. — Stock Photo
    Human heart with coronary blood vessels, illustration.
    Illustration of cross section of human skin with hair follicle and blood vessels. — Stock Photo
    Illustration of cross section of human skin with hair follicle and blood vessels.
    Cropped shot of physician measuring patient'd blood pressure with tonometer — Stock Photo
    Cropped shot of physician measuring patient'd blood pressure with tonometer
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs. — Stock Photo
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs.
    Cancer cells and blood vessels — Stock Photo
    Cancer cells and blood vessels
    Overhead view of a boy eating a blood orange and his dog sitting under the table — Stock Photo
    Overhead view of a boy eating a blood orange and his dog sitting under the table
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea
    Doctor practicing chest compression on cardiopulmonary resuscitation training dummy. — Stock Photo
    Doctor practicing chest compression on cardiopulmonary resuscitation training dummy.
    Glass tube with blood sample of patient placed near syringe on table in vet clinic laboratory — Stock Photo
    Glass tube with blood sample of patient placed near syringe on table in vet clinic laboratory
    Laboratory technician analyzing blood bag in blood bank — Stock Photo
    Laboratory technician analyzing blood bag in blood bank
    Senior mixed race man at home taking his blood pressure and writing it down. senior healthcare at home during quarantine lockdown. — Stock Photo
    Senior mixed race man at home taking his blood pressure and writing it down. senior healthcare at home during quarantine lockdown.
    Human heart anatomy — Stock Photo
    Human heart anatomy
    Laboratory technicians analyzing blood sample in blood bank — Stock Photo
    Laboratory technicians analyzing blood sample in blood bank
    Illustration of heart in male body silhouette on white background. — Stock Photo
    Illustration of heart in male body silhouette on white background.
    Digital illustration of cross-section of blood vessel with acute lymphoblastic leukaemia showing abundant lymphoblasts. — Stock Photo
    Digital illustration of cross-section of blood vessel with acute lymphoblastic leukaemia showing abundant lymphoblasts.
    Forensic scientist taking swab from blood-stained shirt as forensic evidence. — Stock Photo
    Forensic scientist taking swab from blood-stained shirt as forensic evidence.
    Female nurse checking blood pressure of senior male patient in clinic examination room — Stock Photo
    Female nurse checking blood pressure of senior male patient in clinic examination room
    3d illustration of red blood cells disintegrating. — Stock Photo
    3d illustration of red blood cells disintegrating.
    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.
    Close-up of tube and syringe in hematology laboratory with scientist in background. — Stock Photo
    Close-up of tube and syringe in hematology laboratory with scientist in background.
    Covid-19 coronavirus particles, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019 — Stock Photo
    Covid-19 coronavirus particles, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019
    3d illustration of a cross-section of the human eye in a side view. — Stock Photo
    3d illustration of a cross-section of the human eye in a side view.
    Fluffy cat with paw in blood oxygen meter lying on medical table after operation in clinic — Stock Photo
    Fluffy cat with paw in blood oxygen meter lying on medical table after operation in clinic
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Microscope and pile on Petri dishes in laboratory on blue background. — Stock Photo
    Microscope and pile on Petri dishes in laboratory on blue background.
    Tick on human skin, computer illustration. — Stock Photo
    Tick on human skin, computer illustration.
    Lymphocyte white blood cells — Stock Photo
    Lymphocyte white blood cells
    Paramedics putting injured girl onto a backboard on street — Stock Photo
    Paramedics putting injured girl onto a backboard on street
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration.
    Mature woman testing blood pressure with machine. — Stock Photo
    Mature woman testing blood pressure with machine.
    Blood vessels of the head, computer illustration — Stock Photo
    Blood vessels of the head, computer illustration
    Vascular system of female upper body, computer illustration. — Stock Photo
    Vascular system of female upper body, computer illustration.
    Illustration of fat inside of human artery. — Stock Photo
    Illustration of fat inside of human artery.
    Blood cells and Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration. — Stock Photo
    Blood cells and Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration.
    Veterinarian examining cat in veterinary surgery — Stock Photo
    Veterinarian examining cat in veterinary surgery
    Paramedics examining injured girl on street — Stock Photo
    Paramedics examining injured girl on street
    Human body model showing male anatomy, digital illustration. — Stock Photo
    Human body model showing male anatomy, digital illustration.
    White mask with reusable KN95 protection index for virus protection on yellow background — Stock Photo
    White mask with reusable KN95 protection index for virus protection on yellow background
    Illustration of blue silhouette of obese woman with highlighted heart. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted heart.
    White blood cells, digital illustration. — Stock Photo
    White blood cells, digital illustration.
    Computer generated image of capsules modeled on sample of fluoxetine — Stock Photo
    Computer generated image of capsules modeled on sample of fluoxetine
    Injured girl treated by paramedic at accident spot — Stock Photo
    Injured girl treated by paramedic at accident spot