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    From below ill boy measuring temperature with electronic thermometer while lying on couch at home and having flu — Stock Photo
    From below ill boy measuring temperature with electronic thermometer while lying on couch at home and having flu
    Micrograph of H3N2 influenza virus particles. — Stock Photo
    Micrograph of H3N2 influenza virus particles.
    Brain tumor in male body, conceptual computer illustration. — Stock Photo
    Brain tumor in male body, conceptual computer illustration.
    Illustration of healthy and degenerated substantia nigra of human brains with dopaminergic neurons. — Stock Photo
    Illustration of healthy and degenerated substantia nigra of human brains with dopaminergic neurons.
    Pathophysiology of diabetic foot ulcers — Stock Photo
    Pathophysiology of diabetic foot ulcers
    Visual render of Swine flu — Stock Photo
    Visual render of Swine flu
    Lassa virus particles, digital illustration. — Stock Photo
    Lassa virus particles, digital illustration.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Macrophage (purple) and cancer cells (red), illustration. — Stock Photo
    Macrophage (purple) and cancer cells (red), illustration.
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Illustration of senior man silhouette with visible thyroid gland. — Stock Photo
    Illustration of senior man silhouette with visible thyroid gland.
    Plasmodium vivax protozoa and red blood cells, digital illustration. — Stock Photo
    Plasmodium vivax protozoa and red blood cells, digital illustration.
    Mature man sneezing into handkerchief. — Stock Photo
    Mature man sneezing into handkerchief.
    Bacterial cells on tissue surface — Stock Photo
    Bacterial cells on tissue surface
    Female medical specialist in protective uniform and latex gloves vaccinating senior female patient in clinic during coronavirus outbreak — Stock Photo
    Female medical specialist in protective uniform and latex gloves vaccinating senior female patient in clinic during coronavirus outbreak
    Female doctor in protective uniform and latex gloves vaccinating male African American patient in clinic during coronavirus outbreak — Stock Photo
    Female doctor in protective uniform and latex gloves vaccinating male African American patient in clinic during coronavirus outbreak
    Illustration of red and inflamed human appendix and close-up of bacteria causative agents of appendicitis. — Stock Photo
    Illustration of red and inflamed human appendix and close-up of bacteria causative agents of appendicitis.
    Computer illustration of a varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3) — Stock Photo
    Computer illustration of a varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3)
    Doctor with oximeter examining little patient — Stock Photo
    Doctor with oximeter examining little patient
    Little boy blowing nose in hospital on check up — Stock Photo
    Little boy blowing nose in hospital on check up
    Comparison of gross anatomy of acute and chronic pyelonephritis, illustration. — Stock Photo
    Comparison of gross anatomy of acute and chronic pyelonephritis, illustration.
    Female medical specialist in protective uniform, latex gloves and face mask vaccinating African American mature woman patient in clinic during coronavirus outbreak — Stock Photo
    Female medical specialist in protective uniform, latex gloves and face mask vaccinating African American mature woman patient in clinic during coronavirus outbreak
    Crop nurse in white latex gloves holding shoulder of boy with curly hair while giving vaccine injection with syringe in modern clinic — Stock Photo
    Crop nurse in white latex gloves holding shoulder of boy with curly hair while giving vaccine injection with syringe in modern clinic
    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.
    Coronavirus infection, conceptual illustration. — Stock Photo
    Coronavirus infection, conceptual illustration.
    Venezuelan haemorrhagic fever virus — Stock Photo
    Venezuelan haemorrhagic fever virus
    Cancer cell, computer illustration. — Stock Photo
    Cancer cell, computer illustration.
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells. — Stock Photo
    Digital illustration showing vaginitis caused by Candida albicans fungus and close-up of yeast cells.
    Content mother putting on oxygen mask on face of son for inhalation procedure while sitting on sofa at home — Stock Photo
    Content mother putting on oxygen mask on face of son for inhalation procedure while sitting on sofa at home
    Diseased liver in male body silhouette, digital illustration. — Stock Photo
    Diseased liver in male body silhouette, digital illustration.
    Portrait of elderly woman with Alzheimer's. — Stock Photo
    Portrait of elderly woman with Alzheimer's.
    Bacterial infection spreading in bloodstream — Stock Photo
    Bacterial infection spreading in bloodstream
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli. — Stock Photo
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli.
    Endobronchial valves fitted to treat tuberculosis — Stock Photo
    Endobronchial valves fitted to treat tuberculosis
    Diseased glowing kidneys in female body, conceptual digital illustration. — Stock Photo
    Diseased glowing kidneys in female body, conceptual digital illustration.
    Microscopic view of human respiratory syncytial RSV virus — Stock Photo
    Microscopic view of human respiratory syncytial RSV virus
    Human stomach cancer treatment, conceptual computer illustration. — Stock Photo
    Human stomach cancer treatment, conceptual computer illustration.
    Tumor, illustration — Stock Photo
    Tumor, illustration
    Digital illustration of virus particles on black background. — Stock Photo
    Digital illustration of virus particles on black background.
    Surgeons in masks operating — Stock Photo
    Surgeons in masks operating
    Computer illustration of coronavirus particles in bloodstream — Stock Photo
    Computer illustration of coronavirus particles in bloodstream
    Blurred unrecognizable medic in protective face shield mask and latex gloves with vial of coronavirus vaccine and syringe showing to camera while standing in hospital room — Stock Photo
    Blurred unrecognizable medic in protective face shield mask and latex gloves with vial of coronavirus vaccine and syringe showing to camera while standing in hospital room
    Herpes Simplex virus structure, digital illustration. — Stock Photo
    Herpes Simplex virus structure, digital illustration.
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli. — Stock Photo
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli.
    Canine parvovirus, illustration. Canine Parvoviruses include the smallest known viruses and some of the most environmentally resistant. — Stock Photo
    Canine parvovirus, illustration. Canine Parvoviruses include the smallest known viruses and some of the most environmentally resistant.
    Pneumonia inflammatory condition of lungs, digital illustration. — Stock Photo
    Pneumonia inflammatory condition of lungs, digital illustration.
    Plasmodium malariae protozoan parasite, digital illustration. — Stock Photo
    Plasmodium malariae protozoan parasite, digital illustration.
    Japanese encephalitis virus (JEV), computer illustration. JEV is an RNA (ribonucleic acid) virus from the Flaviviridae family — Stock Photo
    Japanese encephalitis virus (JEV), computer illustration. JEV is an RNA (ribonucleic acid) virus from the Flaviviridae family
    Alveolar macrophage phagocytosis of E. coli — Stock Photo
    Alveolar macrophage phagocytosis of E. coli
    Liver cirrhosis. Computer illustration and light micrograph of a section through a human liver with from primary biliary cirrhosis. Cirrhosis is a disease in which bands of fibrosis (internal scarring) break up the internal structure of the liver — Stock Photo
    Liver cirrhosis. Computer illustration and light micrograph of a section through a human liver with from primary biliary cirrhosis. Cirrhosis is a disease in which bands of fibrosis (internal scarring) break up the internal structure of the liver
    Surgeons processing operation under lamp — Stock Photo
    Surgeons processing operation under lamp
    Colored illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Colored illustration of cancer cell being attacked by white blood cells.
    Virus particle, computer illustration — Stock Photo
    Virus particle, computer illustration
    Oesophageal cancer, composite digital illustration with human body and cancer cell. — Stock Photo
    Oesophageal cancer, composite digital illustration with human body and cancer cell.
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Digital artwork of digestive system suffering from irritable bowel syndrome. — Stock Photo
    Digital artwork of digestive system suffering from irritable bowel syndrome.
    BENIN, AFRICA - AUGUST 30, 2017: Black man lying on bed with drop bottle in hospital and looking at camera — Stock Photo
    BENIN, AFRICA - AUGUST 30, 2017: Black man lying on bed with drop bottle in hospital and looking at camera
    Hepatitis E virus red particles with protein coat. — Stock Photo
    Hepatitis E virus red particles with protein coat.
    Pneumonia inflammatory condition of lungs, digital illustration. — Stock Photo
    Pneumonia inflammatory condition of lungs, digital illustration.
    Diseased thyroid gland, conceptual computer illustration. — Stock Photo
    Diseased thyroid gland, conceptual computer illustration.