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    Destruction of a human embryo — Stock Photo
    Destruction of a human embryo
    Toilet seat microbes, conceptual digital illustration. — Stock Photo
    Toilet seat microbes, conceptual digital illustration.
    Microscopic Dust mites on floor — Stock Photo
    Microscopic Dust mites on floor
    Closeup of Amoeba, computer illustration — Stock Photo
    Closeup of Amoeba, computer illustration
    Illustration of clot of human blood cells. — Stock Photo
    Illustration of clot of human blood cells.
    Tapeworm parasites in intestines — Stock Photo
    Tapeworm parasites in intestines
    Conceptual digital illustration of artificial fertilization with blastocyst in Petri dish. — Stock Photo
    Conceptual digital illustration of artificial fertilization with blastocyst in Petri dish.
    Opioid and cannabinoid receptors in brain cell membrane, illustration. — Stock Photo
    Opioid and cannabinoid receptors in brain cell membrane, illustration.
    Illustration of malaria infected blood cells. — Stock Photo
    Illustration of malaria infected blood cells.
    Illustration of clot of human blood cells. — Stock Photo
    Illustration of clot of human blood cells.
    Illustration of human blood cells on black background. — Stock Photo
    Illustration of human blood cells on black background.
    Illustration of red human blood cells on black background. — Stock Photo
    Illustration of red human blood cells on black background.
    Digital illustration of Escherichia coli bacteria. — Stock Photo
    Digital illustration of Escherichia coli bacteria.
    Illustration of HIV virus particles in human blood. — Stock Photo
    Illustration of HIV virus particles in human blood.
    Abstract colored illustration of human nerve cell on light background. — Stock Photo
    Abstract colored illustration of human nerve cell on light background.
    Abstract illustration of blue bacilli bacteria, full frame. — Stock Photo
    Abstract illustration of blue bacilli bacteria, full frame.
    Digital illustration of cerebrospinal fluid and neutrophils with Neisseria meningitidis bacteria. — Stock Photo
    Digital illustration of cerebrospinal fluid and neutrophils with Neisseria meningitidis bacteria.
    Realistic illustration of human nerve cell on white background. — Stock Photo
    Realistic illustration of human nerve cell on white background.
    Zika virus particles transmitted by mosquito bite and neuron cell, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite and neuron cell, digital illustration.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Colored illustration of amyloid plaques on nerve cell. — Stock Photo
    Colored illustration of amyloid plaques on nerve cell.
    Colony of escherichia coli bacteria — Stock Photo
    Colony of escherichia coli bacteria
    Microscopic view of Bacillus anthracis bacteriophyta — Stock Photo
    Microscopic view of Bacillus anthracis bacteriophyta
    Giardia lamblia single-celled protozoan parasites in human duodenum, digital artwork. — Stock Photo
    Giardia lamblia single-celled protozoan parasites in human duodenum, digital artwork.
    Toilet seat microbes, conceptual digital illustration. — Stock Photo
    Toilet seat microbes, conceptual digital illustration.
    Coloured scanning electron micrograph of surface of prostate cancer cells. — Stock Photo
    Coloured scanning electron micrograph of surface of prostate cancer cells.
    Closterium desmid, computer illustration. — Stock Photo
    Closterium desmid, computer illustration.
    Treponema pallidum bacteria — Stock Photo
    Treponema pallidum bacteria
    Abstract colored illustration of blue human nerve cell on light background. — Stock Photo
    Abstract colored illustration of blue human nerve cell on light background.
    Abstract close-up of green fabric structure, digital illustration. — Stock Photo
    Abstract close-up of green fabric structure, digital illustration.
    Immature parasitic trematode — Stock Photo
    Immature parasitic trematode
    Mature intestinal tapeworm — Stock Photo
    Mature intestinal tapeworm
    Conceptual image of polyomavirus cells — Stock Photo
    Conceptual image of polyomavirus cells
    Mouldy smoked sausage and illustration of microscopic fungus Penicillium causing food spoilage and producing antibiotic penicillin. — Stock Photo
    Mouldy smoked sausage and illustration of microscopic fungus Penicillium causing food spoilage and producing antibiotic penicillin.
    Winged Pearl Oyster (Pteria brunnea) with colonies of microscopic hydroids on its lip forming a beard. The Winged Pearl is growing attached to Hawaiian Black Coral (Antipathes griggi) on a submerged pinnacle off south Kona, the Big Island; Island of — Stock Photo
    Winged Pearl Oyster (Pteria brunnea) with colonies of microscopic hydroids on its lip forming a beard. The Winged Pearl is growing attached to Hawaiian Black Coral (Antipathes griggi) on a submerged pinnacle off south Kona, the Big Island; Island of
    Scanning electron micrograph of bacteria cultured from sample of human faeces. — Stock Photo
    Scanning electron micrograph of bacteria cultured from sample of human faeces.
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan.
    Close-up 3D illustration of Y chromosome on white background. — Stock Photo
    Close-up 3D illustration of Y chromosome on white background.
    Bacteria forming a human head — Stock Photo
    Bacteria forming a human head
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration — Stock Photo
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration
    Abstract green colored cancer cell on black background, digital illustration. — Stock Photo
    Abstract green colored cancer cell on black background, digital illustration.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Illustration of group of cells in blood clot. — Stock Photo
    Illustration of group of cells in blood clot.
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli. — Stock Photo
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli.
    Gram-positive Peptococcus bacteria, digital illustration. — Stock Photo
    Gram-positive Peptococcus 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.
    Mouldy bread and illustration of microscopic fungi Penicillium causing food spoilage and producing antibiotic penicillin. — Stock Photo
    Mouldy bread and illustration of microscopic fungi Penicillium causing food spoilage and producing antibiotic penicillin.
    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.
    Lychnocanoma radiolarian shell — Stock Photo
    Lychnocanoma radiolarian shell
    E. coli bacteria, illustration. Escherichia coli is a rod-shaped bacterium (bacillus). Its cell membrane is covered in fine filaments called pili or fimbriae — Stock Photo
    E. coli bacteria, illustration. Escherichia coli is a rod-shaped bacterium (bacillus). Its cell membrane is covered in fine filaments called pili or fimbriae
    3d rendered abstract illustration of blue nerve cell. — Stock Photo
    3d rendered abstract illustration of blue nerve cell.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    3d rendered illustration of human nerve cell on blue background. — Stock Photo
    3d rendered illustration of human nerve cell on blue background.
    Toilet microbes in water closet, conceptual digital illustration. — Stock Photo
    Toilet microbes in water closet, conceptual digital illustration.
    Sperm spermatozoa swimming towards egg cell, colored digital illustration. — Stock Photo
    Sperm spermatozoa swimming towards egg cell, colored digital illustration.
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Illustration of sperm around human egg cell. — Stock Photo
    Illustration of sperm around human egg cell.
    Coloured scanning electron micrograph intricately structured microscopic brochosomes granules secreted by leafhopper. — Stock Photo
    Coloured scanning electron micrograph intricately structured microscopic brochosomes granules secreted by leafhopper.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Abstract red colored cancer cell on white background, digital illustration. — Stock Photo
    Abstract red colored cancer cell on white background, digital illustration.