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    Bending male silhouette with knee pain, digital illustration. — Stock Photo
    Bending male silhouette with knee pain, digital illustration.
    Rotavirus particles infecting human intestine, digital artwork. — Stock Photo
    Rotavirus particles infecting human intestine, digital artwork.
    Illustration of small intestine in human body silhouette. — Stock Photo
    Illustration of small intestine in human body silhouette.
    Cellular organelles and mitochondrion — Stock Photo
    Cellular organelles and mitochondrion
    Digital illustration of painful shoulder in human skeleton. — Stock Photo
    Digital illustration of painful shoulder in human skeleton.
    Nipah virus particles, digital artwork. — Stock Photo
    Nipah virus particles, digital artwork.
    3d illustration of Spirochaete Borrelia bacteria, the cause of Lyme disease — Stock Photo
    3d illustration of Spirochaete Borrelia bacteria, the cause of Lyme disease
    Illustration of human brain on white background. — Stock Photo
    Illustration of human brain on white background.
    Skin anatomy showing tissue stratification — Stock Photo
    Skin anatomy showing tissue stratification
    Toilet microbes on contaminated seat surface in water closet, conceptual digital illustration. — Stock Photo
    Toilet microbes on contaminated seat surface in water closet, conceptual digital illustration.
    Stomach cancer in human body, digital illustration. — Stock Photo
    Stomach cancer in human body, digital illustration.
    Conceptual illustration of genetically modified corn on plain background. — Stock Photo
    Conceptual illustration of genetically modified corn on plain background.
    Kidneys in male body — Stock Photo
    Kidneys in male body
    Illustration of shoulder bones in human skeleton. — Stock Photo
    Illustration of shoulder bones in human skeleton.
    Digitally generated illustration of influenza virus approaching receptor on plasma membrane of cell. — Stock Photo
    Digitally generated illustration of influenza virus approaching receptor on plasma membrane of cell.
    3d rendered illustration of male rings athlete painful shoulders. — Stock Photo
    3d rendered illustration of male rings athlete painful shoulders.
    Vintage UFO flying in sky with clouds, illustration. — Stock Photo
    Vintage UFO flying in sky with clouds, illustration.
    Illustration of stomach in human body silhouette. — Stock Photo
    Illustration of stomach in human body silhouette.
    Mosasaurus skeleton on white background, digital illustration. — Stock Photo
    Mosasaurus skeleton on white background, digital illustration.
    Illustration of painful knee in human skeleton part. — Stock Photo
    Illustration of painful knee in human skeleton part.
    Female silhouette with visible internal organs, digital illustration. — Stock Photo
    Female silhouette with visible internal organs, digital illustration.
    Magnified digital illustration of mammary gland cells. — Stock Photo
    Magnified digital illustration of mammary gland cells.
    Sitting male silhouette with knee pain, digital illustration. — Stock Photo
    Sitting male silhouette with knee pain, digital illustration.
    Illustration of abstract blue technological plexus nerve cell. — Stock Photo
    Illustration of abstract blue technological plexus nerve cell.
    Digital illustration of trypanosome parasites causing Chagas disease in blood vessel. — Stock Photo
    Digital illustration of trypanosome parasites causing Chagas disease in blood vessel.
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis — Stock Photo
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis
    3d rendered illustration of cyclist spine while biking on black background. — Stock Photo
    3d rendered illustration of cyclist spine while biking on black background.
    Illustration of pancreas cancer in human body silhouette. — Stock Photo
    Illustration of pancreas cancer in human body silhouette.
    Spherical and rod-shaped bacteria inside biofilm, digital illustration. — Stock Photo
    Spherical and rod-shaped bacteria inside biofilm, digital illustration.
    Illustration of clavicle in human skeleton. — Stock Photo
    Illustration of clavicle in human skeleton.
    Illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis (TB). The disease affects the lungs and sometimes other parts of the body — Stock Photo
    Illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis (TB). The disease affects the lungs and sometimes other parts of the body
    Skin anatomy showing tissue stratification — Stock Photo
    Skin anatomy showing tissue stratification
    Colored norovirus particles, digital illustration. — Stock Photo
    Colored norovirus particles, digital illustration.
    Brain-eating amoeba Naegleria fowleri protozoans in trophozoite form, digital illustration. — Stock Photo
    Brain-eating amoeba Naegleria fowleri protozoans in trophozoite form, digital illustration.
    Meningitis bacteria (Neisseria meningitidis), computer illustration — Stock Photo
    Meningitis bacteria (Neisseria meningitidis), computer illustration
    Blue rod-shaped bacteria on white background, digital illustration. — Stock Photo
    Blue rod-shaped bacteria on white background, digital illustration.
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract. — Stock Photo
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract.
    Measles virus particle, computer illustration. — Stock Photo
    Measles virus particle, computer illustration.
    Human buttock muscles — Stock Photo
    Human buttock muscles
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Animal cell during cytokinesis (cell division), illustration. — Stock Photo
    Animal cell during cytokinesis (cell division), illustration.
    Composite image of young woman using laptop in city — Stock Photo
    Composite image of young woman using laptop in city
    3d rendered illustration of blue silhouette of man with inflamed lungs on black background. — Stock Photo
    3d rendered illustration of blue silhouette of man with inflamed lungs on black background.
    3d rendered illustration of colored female larynx in body silhouette. — Stock Photo
    3d rendered illustration of colored female larynx in body silhouette.
    Human heart circulatory and electrical system, 3d illustration. Cross section of the heart showing the ventricles and valves, and the electrical (conduction) system (yellow lines) and circulatory system (red and blue lines). — Stock Photo
    Human heart circulatory and electrical system, 3d illustration. Cross section of the heart showing the ventricles and valves, and the electrical (conduction) system (yellow lines) and circulatory system (red and blue lines).
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    Illustration of figure of obese man with visible organs. — Stock Photo
    Illustration of figure of obese man with visible organs.
    Illustration of spine bones on black background. — Stock Photo
    Illustration of spine bones on black background.
    Reduced and graphic view of a mountainous landscape consisting of vertical cross sections, illustration. — Stock Photo
    Reduced and graphic view of a mountainous landscape consisting of vertical cross sections, illustration.
    3d rendered illustration of blue silhouette of man with backache. — Stock Photo
    3d rendered illustration of blue silhouette of man with backache.
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis — Stock Photo
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis
    3d illustration showing increase of non-functional white blood cells in leukaemia. — Stock Photo
    3d illustration showing increase of non-functional white blood cells in leukaemia.
    3d rendered illustration of human heart. — Stock Photo
    3d rendered illustration of human heart.
    Acanthamoeba castellanii amoeba in cerebrospinal fluid, digital illustration. — Stock Photo
    Acanthamoeba castellanii amoeba in cerebrospinal fluid, digital illustration.
    Upper-body and skull skeletal system — Stock Photo
    Upper-body and skull skeletal system
    Magnified digital illustration of blastocyst cell. — Stock Photo
    Magnified digital illustration of blastocyst cell.
    Human T-cell lymphotropic virus particle, digital conceptual illustration. — Stock Photo
    Human T-cell lymphotropic virus particle, digital conceptual illustration.
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration — Stock Photo
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration
    Toilet seat microbes, conceptual digital illustration. — Stock Photo
    Toilet seat microbes, conceptual digital illustration.
    Illustration of overweight woman with visible gallbladder on black background. — Stock Photo
    Illustration of overweight woman with visible gallbladder on black background.