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    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Enterobius vermicularis threadworm eggs containing worm larvae, causative agent of enterobiasis, computer illustration. — Stock Photo
    Enterobius vermicularis threadworm eggs containing worm larvae, causative agent of enterobiasis, computer illustration.
    UFOs flying above forest trees, illustration. — Stock Photo
    UFOs flying above forest trees, illustration.
    Bacteriophage on blue background, digital illustration. — Stock Photo
    Bacteriophage on blue background, digital illustration.
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration. — Stock Photo
    Gonorrhoea infection causing by bacteria Neisseria gonorrhoeae in male organ while urethritis, digital illustration.
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration. — Stock Photo
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration.
    Bacillus anthracis bacteria — Stock Photo
    Bacillus anthracis bacteria
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Blue colored human brain, digital illustration. — Stock Photo
    Blue colored human brain, digital illustration.
    Human scapula anatomy — Stock Photo
    Human scapula anatomy
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Illustration of HIV virus particles in human blood. — Stock Photo
    Illustration of HIV virus particles in human blood.
    Colorful rhinovirus particles in 360-degree panorama view, digital illustration. — Stock Photo
    Colorful rhinovirus particles in 360-degree panorama view, digital illustration.
    Human hair shafts, digital illustration. — Stock Photo
    Human hair shafts, digital illustration.
    Normal human red blood cell — Stock Photo
    Normal human red blood cell
    DNA molecule and enzymes, digital illustration. — Stock Photo
    DNA molecule and enzymes, digital illustration.
    Human brain anatomy — Stock Photo
    Human brain anatomy
    Human brain pituitary gland, digital illustration. — Stock Photo
    Human brain pituitary gland, digital illustration.
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Realistic digital illustration showing arthritis in human hip. — Stock Photo
    Realistic digital illustration showing arthritis in human hip.
    Bending female silhouette with foot pain, digital illustration. — Stock Photo
    Bending female silhouette with foot pain, digital illustration.
    Digital illustration of Acanthamoeba castellanii amoebas on white background. — Stock Photo
    Digital illustration of Acanthamoeba castellanii amoebas on white background.
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration. — Stock Photo
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration.
    Bacteria multiplying on surface, digital illustration. — Stock Photo
    Bacteria multiplying on surface, digital illustration.
    Digital illustration of abstract pathogenic microorganisms. — Stock Photo
    Digital illustration of abstract pathogenic microorganisms.
    Digital illustration of parasitic hookworms Ancylostoma duodenale on black background. — Stock Photo
    Digital illustration of parasitic hookworms Ancylostoma duodenale on black background.
    Boxer skeletal structure, digital illustration. — Stock Photo
    Boxer skeletal structure, 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.
    Comparison of healthy and smoker lungs, digital illustration. — Stock Photo
    Comparison of healthy and smoker lungs, digital illustration.
    Osteoclast cell structure — Stock Photo
    Osteoclast cell structure
    Lobar pneumonia in stage of red hepatisation, conceptual digital illustration. — Stock Photo
    Lobar pneumonia in stage of red hepatisation, conceptual digital illustration.
    Human fetus at week 24, digital illustration. — Stock Photo
    Human fetus at week 24, digital illustration.
    Illustration of human blood cells on black background. — Stock Photo
    Illustration of human blood cells on black background.
    Human heart anatomy showing valves, cross section illustration. — Stock Photo
    Human heart anatomy showing valves, cross section illustration.
    Bacterial wall and antibiotic resistance — Stock Photo
    Bacterial wall and antibiotic resistance
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Human spine anatomy — Stock Photo
    Human spine anatomy
    Stachybotrys toxic mould fruiting structure with spores, digital illustration. — Stock Photo
    Stachybotrys toxic mould fruiting structure with spores, digital illustration.
    Hepatitis B virus particles in 360-degree panorama view, colored digital illustration. — Stock Photo
    Hepatitis B virus particles in 360-degree panorama view, colored digital illustration.
    Medical illustration of male facial muscles — Stock Photo
    Medical illustration of male facial muscles
    Digital illustration of Legionella pneumophila bacteria, cause of Legionnaires disease. — Stock Photo
    Digital illustration of Legionella pneumophila bacteria, cause of Legionnaires disease.
    Conceptual digital illustration showing Giardia intestinalis parasites in drop of water from dirty tap. — Stock Photo
    Conceptual digital illustration showing Giardia intestinalis parasites in drop of water from dirty tap.
    Balamuthia mandrillaris amoeba organisms, digital illustration. — Stock Photo
    Balamuthia mandrillaris amoeba organisms, digital illustration.
    Digital illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Escherichia coli, Shigella. — Stock Photo
    Digital illustration showing bacteria causing infections of respiratory and digestive system, Mycobacterium tuberculosis, Helicobacter pylori, Escherichia coli, Shigella.
    Transitional epithelium in urinary bladder, digital illustration. — Stock Photo
    Transitional epithelium in urinary bladder, digital illustration.
    Gram-negative plague bacteria Yersinia pestis with bipolar staining, digital illustration. — Stock Photo
    Gram-negative plague bacteria Yersinia pestis with bipolar staining, digital illustration.
    Human silhouette with lungs infected by pneumonia caused by flu, illustration. — Stock Photo
    Human silhouette with lungs infected by pneumonia caused by flu, illustration.
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Human scalp with dandruff, digital illustration. — Stock Photo
    Human scalp with dandruff, digital illustration.
    Antibiotic passing through bacterial wall — Stock Photo
    Antibiotic passing through bacterial wall
    Transplacental transmission of Toxoplasma gondii parasites to human embryo, conceptual illustration. — Stock Photo
    Transplacental transmission of Toxoplasma gondii parasites to human embryo, conceptual illustration.
    Composite image of bacterial and fungal cultures in Petri dish in scientist hand in front of microbial illustration. — Stock Photo
    Composite image of bacterial and fungal cultures in Petri dish in scientist hand in front of microbial illustration.
    Normal human brain — Stock Photo
    Normal human brain
    Human lungs with ribcage — Stock Photo
    Human lungs with ribcage
    Digital illustration of cancerous tumor in lungs and close-up of lung cancer cells. — Stock Photo
    Digital illustration of cancerous tumor in lungs and close-up of lung cancer cells.
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Digital illustration of hypochromic and microcytic red blood cells while iron deficiency anaemia. — Stock Photo
    Digital illustration of hypochromic and microcytic red blood cells while iron deficiency anaemia.
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Colored digital artwork of cancer cell. — Stock Photo
    Colored digital artwork of cancer cell.
    Total hip replacement, — Stock Photo
    Total hip replacement,