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    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    Close-up of parasitic amoeba in human intestine, digital artwork. — Stock Photo
    Close-up of parasitic amoeba in human intestine, digital artwork.
    Digital illustration of saprophyte green mould conidiophore producing conidia. — Stock Photo
    Digital illustration of saprophyte green mould conidiophore producing conidia.
    Medical illustration of human cell structure on white background. — Stock Photo
    Medical illustration of human cell structure on white background.
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Close-up of parasitic amoeba in human intestine, digital artwork. — Stock Photo
    Close-up of parasitic amoeba in human intestine, digital artwork.
    Entamoeba histolytica invading the intestine — Stock Photo
    Entamoeba histolytica invading the intestine
    Abstract pathogenic microorganisms — Stock Photo
    Abstract pathogenic microorganisms
    Magnified digital illustration of mitochondrion cell. — Stock Photo
    Magnified digital illustration of mitochondrion cell.
    Digital artwork of abstract pathogenic microorganism in human large intestine. — Stock Photo
    Digital artwork of abstract pathogenic microorganism in human large intestine.
    Medical illustration of human cell structure on black background. — Stock Photo
    Medical illustration of human cell structure on black background.
    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.
    Medical illustration of human cell structure on dark background. — Stock Photo
    Medical illustration of human cell structure on dark background.
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Digital illustration of saprophyte green mould conidiophore producing conidia. — Stock Photo
    Digital illustration of saprophyte green mould conidiophore producing conidia.
    Parasitic amoeba engulfing red blood cells — Stock Photo
    Parasitic amoeba engulfing red blood cells
    3d illustration of a Golgi apparatus, or body, within a eukaryotic cell. Golgi are membrane-bound organelles that modify and package proteins. — Stock Photo
    3d illustration of a Golgi apparatus, or body, within a eukaryotic cell. Golgi are membrane-bound organelles that modify and package proteins.
    Protozoan infection in human intestinal lumen — Stock Photo
    Protozoan infection in human intestinal lumen
    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    Salt water pennate diatom frustule — Stock Photo
    Salt water pennate diatom frustule
    Microscopic view of paramecium unicellular ciliates — Stock Photo
    Microscopic view of paramecium unicellular ciliates
    Close-up of parasitic amoeba in human intestine, digital artwork. — Stock Photo
    Close-up of parasitic amoeba in human intestine, digital artwork.
    Microscopic view of paramecium unicellular ciliates — Stock Photo
    Microscopic view of paramecium unicellular ciliates
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells. — Stock Photo
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells.