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    Cancer invasion into surrounding tissues, conceptual computer illustration. — Stock Photo
    Cancer invasion into surrounding tissues, conceptual computer illustration.
    Plasmodium vivax protozoan inside red blood cells, digital illustration. — Stock Photo
    Plasmodium vivax protozoan inside red blood cells, digital illustration.
    Fibrous-cavernous pulmonary tuberculosis cavity in right lung with well-formed fibrous layer. — Stock Photo
    Fibrous-cavernous pulmonary tuberculosis cavity in right lung with well-formed fibrous layer.
    3d illustration of cancer cell attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cell attacked and killed by lymphocytes.
    Human lungs with bacterial pneumonia and close-up of bacteria. — Stock Photo
    Human lungs with bacterial pneumonia and close-up of bacteria.
    Dementia, conceptual computer illustration — Stock Photo
    Dementia, conceptual computer illustration
    Osteoarthritis of the hip — Stock Photo
    Osteoarthritis of the hip
    Painful shoulder joint, computer illustration — Stock Photo
    Painful shoulder joint, computer illustration
    Desert landscape with caravan — Stock Photo
    Desert landscape with caravan
    Colored illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Colored illustration of cancer cell being attacked by white blood cells.
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital illustration. — Stock Photo
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital illustration.
    Illustration of transparent human heart silhouette. — Stock Photo
    Illustration of transparent human heart silhouette.
    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.
    Girl against blue sky and ocean shore — Stock Photo
    Girl against blue sky and ocean shore
    Gram-negative plague bacteria Yersinia pestis with bipolar staining, digital illustration. — Stock Photo
    Gram-negative plague bacteria Yersinia pestis with bipolar staining, digital illustration.
    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.
    Exterior of buildings in city — Stock Photo
    Exterior of buildings in city
    Illustration of transparent blue silhouette of male body with colored stomach cancer. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored stomach cancer.
    3d illustration of tapeworms infestation in human intestine. — Stock Photo
    3d illustration of tapeworms infestation in human intestine.
    3d rendered illustration of colored female mammary glands cancer in body silhouette. — Stock Photo
    3d rendered illustration of colored female mammary glands cancer in body silhouette.
    People watching colony of King Penguins — Stock Photo
    People watching colony of King Penguins
    Medical illustration of spleen cancer in female silhouette. — Stock Photo
    Medical illustration of spleen cancer in female silhouette.
    Painful spine, computer illustration — Stock Photo
    Painful spine, computer illustration
    HIV human immunodeficiency virus in bloodstream, digital illustration — Stock Photo
    HIV human immunodeficiency virus in bloodstream, digital illustration
    Acute pain in ankle of human foot, digital illustration. — Stock Photo
    Acute pain in ankle of human foot, digital illustration.
    Group of viruses, computer illustration — Stock Photo
    Group of viruses, computer illustration
    Medical illustration of inflamed adrenal glands in female silhouette. — Stock Photo
    Medical illustration of inflamed adrenal glands in female silhouette.
    Colored norovirus particles, digital illustration. — Stock Photo
    Colored norovirus particles, digital illustration.
    Illustration of human spleen in body silhouette. — Stock Photo
    Illustration of human spleen in body silhouette.
    Diseased liver in male body silhouette, digital illustration. — Stock Photo
    Diseased liver in male body silhouette, digital illustration.
    Digital illustration of blastocystis hominis parasites, causative agents of diarrheal infection. — Stock Photo
    Digital illustration of blastocystis hominis parasites, causative agents of diarrheal infection.
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph.
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Zabriskie Point at dawn — Stock Photo
    Zabriskie Point at dawn
    Illustration of abnormal red blood cells known as spur cells acanthocytes. — Stock Photo
    Illustration of abnormal red blood cells known as spur cells acanthocytes.
    Illustration of human silhouette with inflamed heart. — Stock Photo
    Illustration of human silhouette with inflamed heart.
    Illustration of Leptospira interrogans, showing a tightly-coiled, highly motile spirochaete bacterium — Stock Photo
    Illustration of Leptospira interrogans, showing a tightly-coiled, highly motile spirochaete bacterium
    Group of people in a rubber boat in the Antarctic. — Stock Photo
    Group of people in a rubber boat in the Antarctic.
    Man working in a reclaimed timber yard. — Stock Photo
    Man working in a reclaimed timber yard.
    Hip before hip replacement surgery, X-ray — Stock Photo
    Hip before hip replacement surgery, X-ray
    Oesophageal cancer rendering — Stock Photo
    Oesophageal cancer rendering
    Illustration of abstract conceptual cancer monster. — Stock Photo
    Illustration of abstract conceptual cancer monster.
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Inflamed prostate in abstract male body, digital illustration. — Stock Photo
    Inflamed prostate in abstract male body, digital illustration.
    Bacterial sinusitis, computer illustration. The sinuses are membrane-lined air-filled spaces in the bones of the face. The frontal sinuses are above the eyes. Below these are the many lobed ethmoid sinuses and behind them the sphenoid sinuses — Stock Photo
    Bacterial sinusitis, computer illustration. The sinuses are membrane-lined air-filled spaces in the bones of the face. The frontal sinuses are above the eyes. Below these are the many lobed ethmoid sinuses and behind them the sphenoid sinuses
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin — Stock Photo
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin
    Illustration of thyroid tumour in transparent male silhouette. — Stock Photo
    Illustration of thyroid tumour in transparent male silhouette.
    Illustration of human skeleton painful ankle. — Stock Photo
    Illustration of human skeleton painful ankle.
    Abstract green colored cancer cells on tissue, digital illustration. — Stock Photo
    Abstract green colored cancer cells on tissue, digital illustration.
    Illustration of kidney cancer in human body silhouette. — Stock Photo
    Illustration of kidney cancer in human body silhouette.
    Instructor discussing air conditioner recharging with student in wheelchair in HVAC classroom — Stock Photo
    Instructor discussing air conditioner recharging with student in wheelchair in HVAC classroom
    Stomach cancer cell, computer illustration — Stock Photo
    Stomach cancer cell, computer illustration
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital illustration. — Stock Photo
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital 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.
    Illustration of human prostate in body silhouette. — Stock Photo
    Illustration of human prostate in body silhouette.
    3D illustration showing the structure of a coronavirus. — Stock Photo
    3D illustration showing the structure of a coronavirus.
    Plasmodium malariae protozoan parasite, digital illustration. — Stock Photo
    Plasmodium malariae protozoan parasite, digital illustration.
    Digital illustration of blastocystis hominis parasites, causative agents of diarrheal infection. — Stock Photo
    Digital illustration of blastocystis hominis parasites, causative agents of diarrheal infection.
    Group of viruses, computer illustration — Stock Photo
    Group of viruses, computer illustration
    3d rendered illustration of prostate cancer on white background. — Stock Photo
    3d rendered illustration of prostate cancer on white background.