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    Close-up shot of surgeon in operating room at work — Stock Photo
    Close-up shot of surgeon in operating room at work
    Bacterial brain infection. Conceptual computer illustration showing Streptococcus pneumoniae bacteria, one of the main causes of bacterial meningitis and meningoencephalitis, infecting brain cells — Stock Photo
    Bacterial brain infection. Conceptual computer illustration showing Streptococcus pneumoniae bacteria, one of the main causes of bacterial meningitis and meningoencephalitis, infecting brain cells
    Illustration of lung cancer in human body silhouette. — Stock Photo
    Illustration of lung cancer in human body silhouette.
    Anatomical models of human brains in rows, anatomical pattern on pink background. — Stock Photo
    Anatomical models of human brains in rows, anatomical pattern on pink background.
    Lymph node with filaria nematode worms, digital illustration — Stock Photo
    Lymph node with filaria nematode worms, digital illustration
    Illustration of prostate cancer in human body silhouette. — Stock Photo
    Illustration of prostate cancer in human body silhouette.
    Inflamed prostate in abstract male body, digital illustration. — Stock Photo
    Inflamed prostate in abstract male body, digital illustration.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Heart attack in human body, conceptual illustration. — Stock Photo
    Heart attack in human body, conceptual illustration.
    Medical illustration of inflammation and pain in human knee joint — Stock Photo
    Medical illustration of inflammation and pain in human knee joint
    Diseased liver in male body silhouette, digital illustration. — Stock Photo
    Diseased liver in male body silhouette, digital illustration.
    Pain localized in lumbar section of spine — Stock Photo
    Pain localized in lumbar section of spine
    Sindbis virus particle — Stock Photo
    Sindbis virus particle
    Colon diverticuli pathology — Stock Photo
    Colon diverticuli pathology
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    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.
    3d rendered illustration of trachea cancer on white background. — Stock Photo
    3d rendered illustration of trachea cancer on white background.
    Digital artwork of illuminated red human cancer cell. — Stock Photo
    Digital artwork of illuminated red human cancer cell.
    Rotavirus particles infecting human intestine, digital artwork. — Stock Photo
    Rotavirus particles infecting human intestine, digital artwork.
    Illustration of abstract cancer cell with tentacles. — Stock Photo
    Illustration of abstract cancer cell with tentacles.
    Human papillomavirus virus — Stock Photo
    Human papillomavirus virus
    Illustration of transparent cancer cell on blue background. — Stock Photo
    Illustration of transparent cancer cell on blue background.
    Illustration of colon cancer in human body silhouette. — Stock Photo
    Illustration of colon cancer in human body silhouette.
    Illustration of lung cancer in human body silhouette. — Stock Photo
    Illustration of lung cancer in human body silhouette.
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease — Stock Photo
    Alzheimer's disease. Illustration of amyloid plaques amongst neurons and neurofibrillary tangles inside neurons. Amyloid plaques are characteristic features of Alzheimer's disease
    Human heart with disease, computer illustration. — Stock Photo
    Human heart with disease, computer illustration.
    Human lungs with viral pneumonia and close-up of virions. — Stock Photo
    Human lungs with viral pneumonia and close-up of virions.
    Illustration of malaria infected blood cells. — Stock Photo
    Illustration of malaria infected blood cells.
    Inflamed prostate in abstract male body, digital illustration. — Stock Photo
    Inflamed prostate in abstract male body, digital illustration.
    Cancer cell clinging to human colon tissue, conceptual illustration. — Stock Photo
    Cancer cell clinging to human colon tissue, conceptual illustration.
    Digital illustration of parasitic hookworm Ancylostoma duodenale in small intestine. — Stock Photo
    Digital illustration of parasitic hookworm Ancylostoma duodenale in small intestine.
    Illustration of kidney cancer in human body silhouette. — Stock Photo
    Illustration of kidney cancer in human body silhouette.
    Front view mid section of woman sitting on her bed at home, taking medication out of a weekly pill box, with other containers of medication on the bed beside her — Stock Photo
    Front view mid section of woman sitting on her bed at home, taking medication out of a weekly pill box, with other containers of medication on the bed beside her
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    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.
    BENIN, AFRICA - AUGUST 30, 2017: Bottom view of doctor vaccinating person at hospital — Stock Photo
    BENIN, AFRICA - AUGUST 30, 2017: Bottom view of doctor vaccinating person at hospital
    Virus particles or virions — Stock Photo
    Virus particles or virions
    Illustration of red cancer cell on blue background. — Stock Photo
    Illustration of red cancer cell on blue background.
    Illustration of kidney cancer in human body silhouette. — Stock Photo
    Illustration of kidney cancer in human body silhouette.
    Acute pyelonephritis. Illustration of small abscesses (yellow) on surface of kidney in case of acute pyelonephritis — Stock Photo
    Acute pyelonephritis. Illustration of small abscesses (yellow) on surface of kidney in case of acute pyelonephritis
    Patient with diverticulitis — Stock Photo
    Patient with diverticulitis
    Illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Illustration of cancer cell being attacked by white blood cells.
    Yellow fever virus — Stock Photo
    Yellow fever virus
    Medical illustration of fat inside of human artery. — Stock Photo
    Medical illustration of fat inside of human artery.
    Male body with diseased colon, computer illustration. — Stock Photo
    Male body with diseased colon, computer illustration.
    Human brain damage, digital medical illustration. — Stock Photo
    Human brain damage, digital medical illustration.
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells — Stock Photo
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells
    Thyroid gland cancer with closeup view of cancer cells, computer illustration. — Stock Photo
    Thyroid gland cancer with closeup view of cancer cells, computer illustration.
    3d rendered illustration of lung cancer on white background. — Stock Photo
    3d rendered illustration of lung cancer on white background.
    Prostate cancer cell, coloured scanning electron micrograph. — Stock Photo
    Prostate cancer cell, coloured scanning electron micrograph.
    Heart disease in female body, conceptual digital illustration. — Stock Photo
    Heart disease in female body, conceptual digital illustration.
    Male body with diseased colon, computer illustration. — Stock Photo
    Male body with diseased colon, computer illustration.
    Acute pyelonephritis, computer illustration and light micrograph — Stock Photo
    Acute pyelonephritis, computer illustration and light micrograph
    Medical illustration of fat inside of human artery. — Stock Photo
    Medical illustration of fat inside of human artery.
    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage. — Stock Photo
    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage.
    Human anatomy of hip pain, conceptual computer illustration. — Stock Photo
    Human anatomy of hip pain, conceptual computer illustration.
    Acute pain in ankle of human foot, digital illustration. — Stock Photo
    Acute pain in ankle of human foot, digital illustration.
    Digital illustration of red cancer cells, full frame. — Stock Photo
    Digital illustration of red cancer cells, full frame.
    Rotavirus particles infecting human intestine, digital artwork. — Stock Photo
    Rotavirus particles infecting human intestine, digital artwork.
    Digital illustration of green cancer cells. — Stock Photo
    Digital illustration of green cancer cells.