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    Macrophage foam cells with lipid droplets, digital illustration. — Stock Photo
    Macrophage foam cells with lipid droplets, digital illustration.
    Various microbes of different shapes — Stock Photo
    Various microbes of different shapes
    Illustration of red and inflamed human appendix and close-up of bacteria causative agents of appendicitis. — Stock Photo
    Illustration of red and inflamed human appendix and close-up of bacteria causative agents of appendicitis.
    Male silhouette with back pain, digital illustration. — Stock Photo
    Male silhouette with back pain, digital 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
    Cutibacterium (formerly Propionibacterium) bacteria, computer illustration. These are an example of non-pathogenic bacteria found on human skin, where they are well adapted to the natural acidity. An example is Cutibacterium acnes — Stock Photo
    Cutibacterium (formerly Propionibacterium) bacteria, computer illustration. These are an example of non-pathogenic bacteria found on human skin, where they are well adapted to the natural acidity. An example is Cutibacterium acnes
    Planet earth as seen from space — Stock Photo
    Planet earth as seen from space
    Abstract colorful swirling patterns, illustration. — Stock Photo
    Abstract colorful swirling patterns, illustration.
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells — Stock Photo
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Coronavirus particles, computer illustration — Stock Photo
    Coronavirus particles, computer illustration
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration.
    Illustration of red cancer cell on blue background. — Stock Photo
    Illustration of red cancer cell on blue background.
    Female silhouette with elbow pain, digital illustration. — Stock Photo
    Female silhouette with elbow pain, digital illustration.
    Hydatid disease in liver caused by larvae of parasitic tapeworm Echinococcus multilocularis, computer illustration — Stock Photo
    Hydatid disease in liver caused by larvae of parasitic tapeworm Echinococcus multilocularis, computer illustration
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species — Stock Photo
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species
    Coronavirus particles, computer illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome) — Stock Photo
    Coronavirus particles, computer illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome)
    Human brain anatomy showing cortex — Stock Photo
    Human brain anatomy showing cortex
    Cancer cells in human brain, digital illustration. — Stock Photo
    Cancer cells in human brain, digital illustration.
    Aspergilloma of lungs and close-up of Aspergillus fungus, digital illustration. — Stock Photo
    Aspergilloma of lungs and close-up of Aspergillus fungus, digital illustration.
    Male silhouette with back pain, digital illustration. — Stock Photo
    Male silhouette with back pain, digital illustration.
    Transplacental transmission of HIV infecting 8 week human embryo, conceptual illustration. — Stock Photo
    Transplacental transmission of HIV infecting 8 week human embryo, conceptual illustration.
    Thyroid gland cancer with closeup view of cancer cells, computer illustration. — Stock Photo
    Thyroid gland cancer with closeup view of cancer cells, computer illustration.
    Neutrophil and monocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Neutrophil and monocyte white blood cells in blood smear, digital illustration.
    Coronavirus particles, computer illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome) — Stock Photo
    Coronavirus particles, computer illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome)
    Group of cysts of Giardia intestinalis protozoans flagellated parasites in small intestine, digital illustration. — Stock Photo
    Group of cysts of Giardia intestinalis protozoans flagellated parasites in small intestine, digital illustration.
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration. — Stock Photo
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration.
    Colonies of Penicillium fungi grown on Sabouraud Dextrose Agar and digital illustration of fungal morphology. — Stock Photo
    Colonies of Penicillium fungi grown on Sabouraud Dextrose Agar and digital illustration of fungal morphology.
    Human silhouette bowling with visible skeletal structure, digital illustration. — Stock Photo
    Human silhouette bowling with visible skeletal structure, digital illustration.
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    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.
    Human T-cell lymphotropic virus particle, digital conceptual illustration. — Stock Photo
    Human T-cell lymphotropic virus particle, digital conceptual illustration.
    Thyroid gland cancer with closeup view of cancer cells, computer illustration. — Stock Photo
    Thyroid gland cancer with closeup view of cancer cells, computer illustration.
    Madagascar and Africa on the globe, computer illustration. — Stock Photo
    Madagascar and Africa on the globe, computer illustration.
    Thyroid gland cancer with closeup view of cancer cells, computer illustration. — Stock Photo
    Thyroid gland cancer with closeup view of cancer cells, computer 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.
    Woolly mammoth realistic 3d illustration, side view on white background and dropped shadow. — Stock Photo
    Woolly mammoth realistic 3d illustration, side view on white background and dropped shadow.
    3d illustration of a mitochondrion within a cell. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidase sugars and fats to produce energy — Stock Photo
    3d illustration of a mitochondrion within a cell. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidase sugars and fats to produce energy
    Protozoan Plasmodium falciparum, causative agent of tropical malaria, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria, digital illustration.
    Group of Trichomonas hominis protozoan parasites, digital illustration. — Stock Photo
    Group of Trichomonas hominis protozoan parasites, digital illustration.
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus. — Stock Photo
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus.
    Digital illustration of Penicillium roqueforti fungus used in cheesemaking. — Stock Photo
    Digital illustration of Penicillium roqueforti fungus used in cheesemaking.
    Coronavirus particles, computer illustration — Stock Photo
    Coronavirus particles, computer illustration
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Female silhouette with visible mammary glands, digital illustration. — Stock Photo
    Female silhouette with visible mammary glands, digital illustration.
    Digital labelled illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Hepatitis B viruses, Entamoeba histolytica. — Stock Photo
    Digital labelled illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Hepatitis B viruses, Entamoeba histolytica.
    Red blood cells and leukocytes in cross-section of blood vessel, digital illustration. — Stock Photo
    Red blood cells and leukocytes in cross-section of blood vessel, digital illustration.
    Basophil white blood cell, digital illustration. — Stock Photo
    Basophil white blood cell, digital illustration.
    Red blood cells — Stock Photo
    Red blood cells
    Human hair shafts, computer illustration — Stock Photo
    Human hair shafts, computer illustration
    Human esophagus and stomach — Stock Photo
    Human esophagus and stomach
    Group of viruses, computer illustration — Stock Photo
    Group of viruses, computer illustration
    Digital artwork of human cells with cytomegalic inclusion disease symptom of cytomegalovirus infection. — Stock Photo
    Digital artwork of human cells with cytomegalic inclusion disease symptom of cytomegalovirus infection.
    3d illustration of a ribosome (purple), the site of protein synthesis, producing a polypeptide chain (blue). This process is known as translation. — Stock Photo
    3d illustration of a ribosome (purple), the site of protein synthesis, producing a polypeptide chain (blue). This process is known as translation.
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation — Stock Photo
    Computer illustration showing human hair with dandruff and close-up view of microscopic fungi Malassezia furfur associated with seborrhoeic dermatitis and dandruff formation
    Malassezia skin fungus, computer illustration — Stock Photo
    Malassezia skin fungus, computer illustration
    Normal flora of human intestine, conceptual computer illustration — Stock Photo
    Normal flora of human intestine, conceptual computer illustration
    Earth from space, computer illustration — Stock Photo
    Earth from space, computer illustration
    Pollen grains of mimosa flower, digital illustration. — Stock Photo
    Pollen grains of mimosa flower, digital illustration.
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells — Stock Photo
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells