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    Campylodiscus fastuosus diatom — Stock Photo
    Campylodiscus fastuosus diatom
    Section of a muscular artery — Stock Photo
    Section of a muscular artery
    Mycobacterium smegmatis bacteria — Stock Photo
    Mycobacterium smegmatis bacteria
    Phase contrast light micrograph of Paramecium a ciliate protozoan. — Stock Photo
    Phase contrast light micrograph of Paramecium a ciliate protozoan.
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms. — Stock Photo
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms.
    Human blood cells — Stock Photo
    Human blood cells
    Section through a growing bone — Stock Photo
    Section through a growing bone
    Section through a wart — Stock Photo
    Section through a wart
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets. — Stock Photo
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets.
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Colored scanning electron micrograph showing urethral epithelium of urethra. — Stock Photo
    Colored scanning electron micrograph showing urethral epithelium of urethra.
    Body of cat flea — Stock Photo
    Body of cat flea
    Cross-section of spinal cord, light micrograph. — Stock Photo
    Cross-section of spinal cord, light micrograph.
    Areolar connective tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Areolar connective tissue, light micrograph. Haematoxylin and eosin stain.
    Zika virus particles — Stock Photo
    Zika virus particles
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    House dust mite — Stock Photo
    House dust mite
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms. — Stock Photo
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms.
    Leukaemia blood cells — Stock Photo
    Leukaemia blood cells
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs — Stock Photo
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs
    Asparagus beetle head — Stock Photo
    Asparagus beetle head
    Illustration of Lactobacillus colony — Stock Photo
    Illustration of Lactobacillus colony
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Ascaris Roundworm ovaries — Stock Photo
    Ascaris Roundworm ovaries
    Vaginal bacteria. Coloured scanning electron micrograph (SEM) of bacteria on the vaginal wall. A healthy vaginal flora protects the body against urogenital infections — Stock Photo
    Vaginal bacteria. Coloured scanning electron micrograph (SEM) of bacteria on the vaginal wall. A healthy vaginal flora protects the body against urogenital infections
    Female Asian tiger mosquito, colored scanning electron micrograph. — Stock Photo
    Female Asian tiger mosquito, colored scanning electron micrograph.
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake — Stock Photo
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake
    Activated platelet cells — Stock Photo
    Activated platelet cells
    Gum tissue with gingivitis — Stock Photo
    Gum tissue with gingivitis
    Human smooth muscle, light micrograph. — Stock Photo
    Human smooth muscle, light micrograph.
    Human head louse on human hair — Stock Photo
    Human head louse on human hair
    Wild mustard flower petal surface (Brassica kaber), coloured scanning electron micrograph (SEM). — Stock Photo
    Wild mustard flower petal surface (Brassica kaber), coloured scanning electron micrograph (SEM).
    Cross-section through a cotton stem — Stock Photo
    Cross-section through a cotton stem
    Lining of the small intestine — Stock Photo
    Lining of the small intestine
    Green colored dust mite, digital illustration. — Stock Photo
    Green colored dust mite, digital illustration.
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph.
    Alveolar macrophage phagocytosis of E. coli — Stock Photo
    Alveolar macrophage phagocytosis of E. coli
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface.
    Dividing prostate gland cancer cells, colored scanning electron micrograph. — Stock Photo
    Dividing prostate gland cancer cells, colored scanning electron micrograph.
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality
    Breast with lobular carcinoma — Stock Photo
    Breast with lobular carcinoma
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Micrograph of tendon fibres — Stock Photo
    Micrograph of tendon fibres
    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple. — Stock Photo
    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple.
    Papillae on the upper surface of a rose flower petal (Rosa sp), coloured scanning electron micrograph (SEM). — Stock Photo
    Papillae on the upper surface of a rose flower petal (Rosa sp), coloured scanning electron micrograph (SEM).
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant — Stock Photo
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant
    Coloured scanning electron micrograph of bacteria cultured from mobile phone. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from mobile phone.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli. — Stock Photo
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli.
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum — Stock Photo
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum
    Scanning electron micrograph of bacterial culture from sputum. — Stock Photo
    Scanning electron micrograph of bacterial culture from sputum.
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia. — Stock Photo
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia.