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    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.
    Planet earth as seen from space — Stock Photo
    Planet earth as seen from space
    Lassa virus particles, digital illustration. — Stock Photo
    Lassa virus particles, digital illustration.
    Medical illustration of circulatory system with heart and veins — Stock Photo
    Medical illustration of circulatory system with heart and veins
    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
    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
    Healthy human brain — Stock Photo
    Healthy human brain
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Campylobacter jejuni bacteria with flagella, digital artwork. — Stock Photo
    Campylobacter jejuni bacteria with flagella, digital artwork.
    Lyme disease tick and close-up of Borrelia burgdorferi bacteria, digital illustration. — Stock Photo
    Lyme disease tick and close-up of Borrelia burgdorferi bacteria, digital illustration.
    White blood cell structure — Stock Photo
    White blood cell structure
    Cancer cell, computer illustration — Stock Photo
    Cancer cell, computer illustration
    Front view of female muscular system — Stock Photo
    Front view of female muscular system
    Medical illustration of female breast anatomy — Stock Photo
    Medical illustration of female breast anatomy
    Male silhouette with elbow pain, digital illustration. — Stock Photo
    Male silhouette with elbow pain, digital illustration.
    Yellow rod-shaped Citrobacter bacteria, digital illustration. — Stock Photo
    Yellow rod-shaped Citrobacter bacteria, digital illustration.
    Brain planet, conceptual computer illustration — Stock Photo
    Brain planet, conceptual computer illustration
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Human digestive system with Shigellosis infection and close-up of Shigella bacteria. — Stock Photo
    Human digestive system with Shigellosis infection and close-up of Shigella bacteria.
    Human embryo with four cells — Stock Photo
    Human embryo with four cells
    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.
    Serratia marcescens rod-shaped Gram-negative bacteria, digital illustration — Stock Photo
    Serratia marcescens rod-shaped Gram-negative bacteria, digital illustration
    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.
    Illustration of yellow abscesses on kidney and close-up of Escherichia bacteria. — Stock Photo
    Illustration of yellow abscesses on kidney and close-up of Escherichia bacteria.
    Space craft vehicles in cloudy sky, illustration. — Stock Photo
    Space craft vehicles in cloudy sky, illustration.
    Oesophageal cancer, composite digital illustration with human body and cancer cell. — Stock Photo
    Oesophageal cancer, composite digital illustration with human body and cancer cell.
    Digital illustration of male silhouette with urinary system, including adrenal gland, kidneys, urinary bladder, ureter, prostate and urethra. — Stock Photo
    Digital illustration of male silhouette with urinary system, including adrenal gland, kidneys, urinary bladder, ureter, prostate and urethra.
    Female silhouette with elbow pain, digital illustration. — Stock Photo
    Female silhouette with elbow pain, digital illustration.
    Helicobacter pyloris bacteria — Stock Photo
    Helicobacter pyloris bacteria
    Digital illustration of human body with external haemorrhoids. — Stock Photo
    Digital illustration of human body with external haemorrhoids.
    Closeup of Amoeba, computer illustration — Stock Photo
    Closeup of Amoeba, computer illustration
    Shoulder and waist joints pain — Stock Photo
    Shoulder and waist joints pain
    Cancer cell morphology — Stock Photo
    Cancer cell morphology
    Medical illustration of female circulatory system with heart and arteries — Stock Photo
    Medical illustration of female circulatory system with heart and arteries
    White blood cell and proteins, digital illustration. — Stock Photo
    White blood cell and proteins, digital illustration.
    Oesophageal cancer, composite digital illustration with human body and cancer cell. — Stock Photo
    Oesophageal cancer, composite digital illustration with human body and cancer cell.
    Abortion of human fetus, conceptual digital illustration. — Stock Photo
    Abortion of human fetus, conceptual digital illustration.
    Human skeleton in warrior 1 yoga pose, or virabhadrasana 1. Computer illustration showing skeletal activity in this yoga posture. — Stock Photo
    Human skeleton in warrior 1 yoga pose, or virabhadrasana 1. Computer illustration showing skeletal activity in this yoga posture.
    Cancer cell being attacked by leukocytes, computer illustration — Stock Photo
    Cancer cell being attacked by leukocytes, computer illustration
    Flush toilet microbes, conceptual digital illustration on white background. — Stock Photo
    Flush toilet microbes, conceptual digital illustration on white background.
    Lymphocyte white blood cell in human lymphatic system, digital illustration. — Stock Photo
    Lymphocyte white blood cell in human lymphatic system, digital illustration.
    Medical illustration of the human skin anatomy — Stock Photo
    Medical illustration of the human skin anatomy
    Colored DNA double helix molecule on white background, digital illustration. — Stock Photo
    Colored DNA double helix molecule on white background, digital illustration.
    Digital illustration of Enterobacter Gram-negative bacilli. — Stock Photo
    Digital illustration of Enterobacter Gram-negative bacilli.
    HIV human immunodeficiency virus in bloodstream, digital illustration — Stock Photo
    HIV human immunodeficiency virus in bloodstream, digital illustration
    Computer illustration showing a human skeleton with bad posture while working on a laptop. — Stock Photo
    Computer illustration showing a human skeleton with bad posture while working on a laptop.
    Pentatrichomonas hominis protozoan in human large intestine, digital illustration. — Stock Photo
    Pentatrichomonas hominis protozoan in human large intestine, digital illustration.
    Flu virus cells in imaging flow cytometry colours, digital illustration. — Stock Photo
    Flu virus cells in imaging flow cytometry colours, digital illustration.
    Digital illustration of rod-shaped bacteria inside alveoli of lungs causing pneumonia. — Stock Photo
    Digital illustration of rod-shaped bacteria inside alveoli of lungs causing pneumonia.
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection. — Stock Photo
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection.
    Sitting in chair female silhouette with arm pain, digital illustration. — Stock Photo
    Sitting in chair female silhouette with arm pain, digital illustration.
    Egg of a parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Egg of a parasitic worm Trichuris trichiura, computer illustration
    Coloured 3D computed tomography (CT) scan of the healthy foot of a 23 year old patient. — Stock Photo
    Coloured 3D computed tomography (CT) scan of the healthy foot of a 23 year old patient.
    Purkinje cell of brain cerebellum, digital illustration. — Stock Photo
    Purkinje cell of brain cerebellum, digital illustration.
    Realistic digital illustration showing arthritis in human hand. — Stock Photo
    Realistic digital illustration showing arthritis in human hand.
    Digital illustration of pyramidal nerve cells from cerebral cortex of brain. — Stock Photo
    Digital illustration of pyramidal nerve cells from cerebral cortex of brain.
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation — Stock Photo
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration. — Stock Photo
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration.
    Eosinophil white blood cells in blood vessel, digital illustration showing lobed nuclei. — Stock Photo
    Eosinophil white blood cells in blood vessel, digital illustration showing lobed nuclei.
    T-cell attached to cancer cell — Stock Photo
    T-cell attached to cancer cell