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    Norwalk virus particle — Stock Photo
    Norwalk virus particle
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs — Stock Photo
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs
    Zika virus blue particles, digital illustration. — Stock Photo
    Zika virus blue particles, digital illustration.
    The human brain represented by light points connected by lines, 3d illustration. — Stock Photo
    The human brain represented by light points connected by lines, 3d illustration.
    Computer illustration of bacteria on the surface of intestinal villi — Stock Photo
    Computer illustration of bacteria on the surface of intestinal villi
    3d rendered illustration of male athlete with disc and painful shoulder. — Stock Photo
    3d rendered illustration of male athlete with disc and painful shoulder.
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration. — Stock Photo
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration.
    Computer illustration of rod-shaped bacilli bacteria inside alveolus of lung, causing lower respiratory tract infection and bacterial pneumonia. — Stock Photo
    Computer illustration of rod-shaped bacilli bacteria inside alveolus of lung, causing lower respiratory tract infection and bacterial pneumonia.
    3d rendered illustration of male biker on black background. — Stock Photo
    3d rendered illustration of male biker on black background.
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    Spherical and rod-shaped bacteria inside biofilm, digital illustration. — Stock Photo
    Spherical and rod-shaped bacteria inside biofilm, digital illustration.
    Illustration of silhouette of obese man with visible stomach. — Stock Photo
    Illustration of silhouette of obese man with visible stomach.
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis — Stock Photo
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis
    Illustration of human thyroid gland in body silhouette. — Stock Photo
    Illustration of human thyroid gland in body silhouette.
    3d rendered illustration of human nervous system. — Stock Photo
    3d rendered illustration of human nervous system.
    Shoulder blood supply — Stock Photo
    Shoulder blood supply
    Normal human sperm cells — Stock Photo
    Normal human sperm cells
    Normal flora of human intestine, conceptual computer illustration — Stock Photo
    Normal flora of human intestine, conceptual computer illustration
    3d rendered illustration of skeleton in silhouette of male cyclist on black background. — Stock Photo
    3d rendered illustration of skeleton in silhouette of male cyclist on black background.
    Female silhouette with wrist pain, digital illustration. — Stock Photo
    Female silhouette with wrist pain, digital illustration.
    Illustration of human gallbladder in body silhouette. — Stock Photo
    Illustration of human gallbladder in body silhouette.
    Candida albicans on black background, digital illustration. — Stock Photo
    Candida albicans on black background, digital illustration.
    Human papilloma virus (HPV), computer illustration. HPV causes warts, which mostly occur on hands and feet. Certain strains also infect genitals. Although most warts are non-malignant (not cancerous), some strains of HPV have been associated — Stock Photo
    Human papilloma virus (HPV), computer illustration. HPV causes warts, which mostly occur on hands and feet. Certain strains also infect genitals. Although most warts are non-malignant (not cancerous), some strains of HPV have been associated
    Periwinkle pollen grain — Stock Photo
    Periwinkle pollen grain
    Illustration of figure of obese man with visible organs. — Stock Photo
    Illustration of figure of obese man with visible organs.
    3d rendered illustration of colored female heart in body silhouette. — Stock Photo
    3d rendered illustration of colored female heart in body silhouette.
    3d rendered illustration of dislocated shoulder in human skeleton. — Stock Photo
    3d rendered illustration of dislocated shoulder in human skeleton.
    Measles virus particle, digital illustration. — Stock Photo
    Measles virus particle, digital illustration.
    Human brain and spinal cord, computer illustration — Stock Photo
    Human brain and spinal cord, computer illustration
    Cross-section of large intestine — Stock Photo
    Cross-section of large intestine
    Human jaw bone anatomy — Stock Photo
    Human jaw bone anatomy
    Brain and nerve cell — Stock Photo
    Brain and nerve cell
    Normal human red blood cell — Stock Photo
    Normal human red blood cell
    3d rendered illustration of colored female mammary glands in body silhouette. — Stock Photo
    3d rendered illustration of colored female mammary glands in body silhouette.
    Illustration of silhouette of obese man with visible lungs. — Stock Photo
    Illustration of silhouette of obese man with visible lungs.
    Illustration of the fungus Candida. Individual cells of the fungus are shown as purple ellipsoids. Species of Candida can cause serious infection in humans. For example, Candida auris causes candidiasis, often acquired in hospital by patients — Stock Photo
    Illustration of the fungus Candida. Individual cells of the fungus are shown as purple ellipsoids. Species of Candida can cause serious infection in humans. For example, Candida auris causes candidiasis, often acquired in hospital by patients
    Closeup of Amoeba, computer illustration — Stock Photo
    Closeup of Amoeba, computer illustration
    Illustration of cervical spine in human skeleton. — Stock Photo
    Illustration of cervical spine in human skeleton.
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil blood cell. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil blood cell.
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration — Stock Photo
    Pyramidal neurons (nerve cells) of human brain frontal cortex, computer illustration
    Human embryonic stem cell on pin tip, conceptual digital artwork. — Stock Photo
    Human embryonic stem cell on pin tip, conceptual digital artwork.
    Illustration of upper spine in human skeleton on blue background. — Stock Photo
    Illustration of upper spine in human skeleton on blue background.
    Coronavirus infection, conceptual illustration. — Stock Photo
    Coronavirus infection, conceptual illustration.
    Yellow brain tumour on magnetic resonance imaging scan, illustration. — Stock Photo
    Yellow brain tumour on magnetic resonance imaging scan, illustration.
    Illustration of human gallbladder in body silhouette. — Stock Photo
    Illustration of human gallbladder in body silhouette.
    The human brain represented by light points connected by lines, 3d illustration. — Stock Photo
    The human brain represented by light points connected by lines, 3d illustration.
    Cancer cell, computer illustration — Stock Photo
    Cancer cell, computer illustration
    Meningitis bacteria (Neisseria meningitidis), computer illustration — Stock Photo
    Meningitis bacteria (Neisseria meningitidis), computer illustration
    3d illustration of a Salmonella sp. bacterium showing internal structure — Stock Photo
    3d illustration of a Salmonella sp. bacterium showing internal structure
    Illustration of knee bones in human skeleton on black background. — Stock Photo
    Illustration of knee bones in human skeleton on black background.
    Colored basal ganglia of human brain, digital illustration. — Stock Photo
    Colored basal ganglia of human brain, digital illustration.
    Normal X chromosome — Stock Photo
    Normal X chromosome
    Medical illustration of penis anatomy in human body. — Stock Photo
    Medical illustration of penis anatomy in human body.
    3d rendered illustration of cyclist spine while biking on black background. — Stock Photo
    3d rendered illustration of cyclist spine while biking on black background.
    Animal cell during cytokinesis (cell division), illustration. — Stock Photo
    Animal cell during cytokinesis (cell division), illustration.
    Illustration of three bypasses in human heart. — Stock Photo
    Illustration of three bypasses in human heart.
    Structure of eosinophil blood cell — Stock Photo
    Structure of eosinophil blood cell
    Cyst of Giardia intestinalis protozoan flagellated parasite in small intestine, digital illustration. — Stock Photo
    Cyst of Giardia intestinalis protozoan flagellated parasite in small intestine, digital illustration.
    Human sperm cells — Stock Photo
    Human sperm cells
    Illustration of pink stem cell on black background. — Stock Photo
    Illustration of pink stem cell on black background.