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    Close-up of adenovirus infecting human lungs, digital illustration. — Stock Photo
    Close-up of adenovirus infecting human lungs, digital illustration.
    Digital illustration of multiple threadworms in human intestine. — Stock Photo
    Digital illustration of multiple threadworms in human intestine.
    Medical illustration of upper human torso with muscles, lymphatic system and digestive organs — Stock Photo
    Medical illustration of upper human torso with muscles, lymphatic system and digestive organs
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Astronaut in space, computer illustration — Stock Photo
    Astronaut in space, computer illustration
    Digital illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Hepatitis B, Entamoeba histolytica. — Stock Photo
    Digital illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Hepatitis B, Entamoeba histolytica.
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Syphilis ulcer on vulva — Stock Photo
    Syphilis ulcer on vulva
    Human heart anatomy showing tricuspid valve, digital illustration. — Stock Photo
    Human heart anatomy showing tricuspid valve, digital illustration.
    Human brain olfactory bulb, digital illustration. — Stock Photo
    Human brain olfactory bulb, digital illustration.
    Stomach cancer cell, computer illustration — Stock Photo
    Stomach cancer cell, computer illustration
    White blood cells, digital illustration. — Stock Photo
    White blood cells, digital illustration.
    Human brain thalamus, medical digital illustration. — Stock Photo
    Human brain thalamus, medical digital illustration.
    Abstract pollen grains from various plants differ in size and shape, computer illustration. — Stock Photo
    Abstract pollen grains from various plants differ in size and shape, computer illustration.
    Female silhouette with painful shoulder, digital illustration. — Stock Photo
    Female silhouette with painful shoulder, digital illustration.
    North America side of Earth globe, detailed and photorealistic 3d illustration. — Stock Photo
    North America side of Earth globe, detailed and photorealistic 3d illustration.
    Young latin man in the
    Young latin man in the "Muralla Roja" in Calpe, Spain
    DNA (deoxyribonucleic acid), digital illustration. — Stock Photo
    DNA (deoxyribonucleic acid), digital illustration.
    Pneumonia caused by bacterium Pseudomonas aeruginosa, digital illustration. — Stock Photo
    Pneumonia caused by bacterium Pseudomonas aeruginosa, digital illustration.
    Digital illustration of Mycobacterium tuberculosis gram-positive rod-shaped bacteria which causing disease tuberculosis. — Stock Photo
    Digital illustration of Mycobacterium tuberculosis gram-positive rod-shaped bacteria which causing disease tuberculosis.
    Female silhouette with leg pain, digital illustration. — Stock Photo
    Female silhouette with leg pain, digital illustration.
    Plasmodium vivax protozoa and red blood cells, digital illustration. — Stock Photo
    Plasmodium vivax protozoa and red blood cells, digital illustration.
    Colored thyroid cancer cells, digital illustration. — Stock Photo
    Colored thyroid cancer cells, digital illustration.
    South America view of Earth globe, detailed and photorealistic 3d illustration on white background. — Stock Photo
    South America view of Earth globe, detailed and photorealistic 3d illustration on white background.
    Protozoan Plasmodium falciparum, causative agent of tropical malaria, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria, digital illustration.
    Digital illustration of trypanosome parasite in blood causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasite in blood causing Chagas disease.
    Human brain, computer illustration — Stock Photo
    Human brain, computer illustration
    Antibiotic passing through bacterial wall — Stock Photo
    Antibiotic passing through bacterial wall
    Bacterial colony in culture — Stock Photo
    Bacterial colony in culture
    Human pathogenic viruses causing respiratory and enteric infections, digital illustration. — Stock Photo
    Human pathogenic viruses causing respiratory and enteric infections, digital illustration.
    Composite image of scientist hand with colony of Micrococcus luteus bacteria in nutrient medium — Stock Photo
    Composite image of scientist hand with colony of Micrococcus luteus bacteria in nutrient medium
    Sitting in chair female silhouette with arm pain, digital illustration. — Stock Photo
    Sitting in chair female silhouette with arm pain, digital illustration.
    Human embryo and close-up of Toxoplasma gondii parasites, conceptual illustration. — Stock Photo
    Human embryo and close-up of Toxoplasma gondii parasites, conceptual illustration.
    3D rendering of human vertebral column on black background — Stock Photo
    3D rendering of human vertebral column on black background
    Campylobacter bacteria colony — Stock Photo
    Campylobacter bacteria colony
    Measles virus particles, digital illustration. — Stock Photo
    Measles virus particles, digital illustration.
    Human brain anatomy — Stock Photo
    Human brain anatomy
    Muscular system of pelvic region — Stock Photo
    Muscular system of pelvic region
    Male sex cell — Stock Photo
    Male sex cell
    Enterococcus bacteria colony — Stock Photo
    Enterococcus bacteria colony
    Human neck pain — Stock Photo
    Human neck pain
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Pneumocystis jirovecii fungus spores causing pneumonia digital illustration. — Stock Photo
    Pneumocystis jirovecii fungus spores causing pneumonia digital illustration.
    Digital illustration of capsids of polyoma BK virus. — Stock Photo
    Digital illustration of capsids of polyoma BK virus.
    South Pole view of Earth globe, detailed and photorealistic 3d illustration. — Stock Photo
    South Pole view of Earth globe, detailed and photorealistic 3d illustration.
    Realistic human brain on white background, digital illustration. — Stock Photo
    Realistic human brain on white background, digital illustration.
    Visual rendering of exoplanet — Stock Photo
    Visual rendering of exoplanet
    Astronaut in space, computer illustration — Stock Photo
    Astronaut in space, computer illustration
    Bacteria multiplying on surface, digital illustration. — Stock Photo
    Bacteria multiplying on surface, digital illustration.
    Campylobacter bacteria colony — Stock Photo
    Campylobacter bacteria colony
    Human fetus age 26 weeks — Stock Photo
    Human fetus age 26 weeks
    Calcium lactate crystals on cheese surface with close-up digital illustration of Calcium lactate molecule. — Stock Photo
    Calcium lactate crystals on cheese surface with close-up digital illustration of Calcium lactate molecule.
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus. — Stock Photo
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus.
    Male silhouette with neck pain, digital illustration. — Stock Photo
    Male silhouette with neck pain, digital illustration.
    Antibody 1IGT molecules — Stock Photo
    Antibody 1IGT molecules
    Aspergilloma disease of lungs, digital illustration. — Stock Photo
    Aspergilloma disease of lungs, digital illustration.
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Digital molecular model of secondary structure of immunoglobulin G antibodies. — Stock Photo
    Digital molecular model of secondary structure of immunoglobulin G antibodies.
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar. — Stock Photo
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar.
    Lymphocyte white blood cells in human lymphatic system, digital illustration. — Stock Photo
    Lymphocyte white blood cells in human lymphatic system, digital illustration.