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    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Red blood cells and platelets — Stock Photo
    Red blood cells and platelets
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae. — Stock Photo
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae.
    Lobar pneumonia in stage of grey hepatisation, conceptual digital illustration. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation, conceptual digital illustration.
    Gardnerella vaginalis bacteria — Stock Photo
    Gardnerella vaginalis bacteria
    Section through a Pacinian corpuscle — Stock Photo
    Section through a Pacinian corpuscle
    Hepatic bile duct infected with cocidian protozoa — Stock Photo
    Hepatic bile duct infected with cocidian protozoa
    Unilocular adipose tissue — Stock Photo
    Unilocular adipose tissue
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality
    Flowering currant pollen — Stock Photo
    Flowering currant pollen
    Coloured scanning electron micrograph of breast cancer cell. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cell.
    Miliary tuberculosis disease in lungs, digital illustration and light micrograph. — Stock Photo
    Miliary tuberculosis disease in lungs, digital illustration and light micrograph.
    Light micrograph of a longitudinal section through a healthy arteriole. — Stock Photo
    Light micrograph of a longitudinal section through a healthy arteriole.
    Microsporum gypseum fungus — Stock Photo
    Microsporum gypseum fungus
    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower.
    Acrospaera radiolarian shell — Stock Photo
    Acrospaera radiolarian shell
    Parasitic dust mite on white background, digital illustration. — Stock Photo
    Parasitic dust mite on white background, digital illustration.
    Colored scanning electron micrograph of rod-shaped, gram-negative bacteria Escherichia coli of human intestine. — Stock Photo
    Colored scanning electron micrograph of rod-shaped, gram-negative bacteria Escherichia coli of human intestine.
    Human cardiac muscle, light micrograph. — Stock Photo
    Human cardiac muscle, light micrograph.
    Acanthocystis. Coloured scanning electron micrograph (SEM) of a centrohelid heliozoan with tangential plate-scales and radial spines — Stock Photo
    Acanthocystis. Coloured scanning electron micrograph (SEM) of a centrohelid heliozoan with tangential plate-scales and radial spines
    Schizosaccharomyces pombe yeast — Stock Photo
    Schizosaccharomyces pombe yeast
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission electron micrograph. — Stock Photo
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission electron micrograph.
    Coloured scanning electron micrograph of breast cancer cells. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cells.
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Dividing prostate gland cancer cells, colored scanning electron micrograph. — Stock Photo
    Dividing prostate gland cancer cells, colored scanning electron micrograph.
    Section through bone marrow — Stock Photo
    Section through bone marrow
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Plaque-forming bacteria — Stock Photo
    Plaque-forming bacteria
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Rod-shaped Anthrax bacteria — Stock Photo
    Rod-shaped Anthrax bacteria
    Leukaemia cells in a patient with Bloom's syndrome, coloured transmission electron micrograph (TEM). — Stock Photo
    Leukaemia cells in a patient with Bloom's syndrome, coloured transmission electron micrograph (TEM).
    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph.
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Coiled proboscis of a moth — Stock Photo
    Coiled proboscis of a moth
    Osteosarcoma cancer cell — Stock Photo
    Osteosarcoma cancer cell
    Transverse section through the midrib of a fern leaf — Stock Photo
    Transverse section through the midrib of a fern leaf
    Miliary tuberculosis disease in lungs, digital illustration and light micrograph. — Stock Photo
    Miliary tuberculosis disease in lungs, digital illustration and light micrograph.
    Hair follicles of human skin — Stock Photo
    Hair follicles of human skin
    Cross-section through a fallopian tube — Stock Photo
    Cross-section through a fallopian tube
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem. — Stock Photo
    Light micrograph (LM) of a section through sunflower(helianthus annuus) tissue showing spiral tracheids, a type of xylem.
    Adenocarcinoma of the endometrium — Stock Photo
    Adenocarcinoma of the endometrium
    Light micrograph of a longitudinal section through a male pine cone showing the pollen (yellow). — Stock Photo
    Light micrograph of a longitudinal section through a male pine cone showing the pollen (yellow).
    Liver cirrhosis. Computer illustration and light micrograph of a section through a human liver with from primary biliary cirrhosis. Cirrhosis is a disease in which bands of fibrosis (internal scarring) break up the internal structure of the liver — Stock Photo
    Liver cirrhosis. Computer illustration and light micrograph of a section through a human liver with from primary biliary cirrhosis. Cirrhosis is a disease in which bands of fibrosis (internal scarring) break up the internal structure of the liver
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Micrograph of H3N2 influenza virus particles. — Stock Photo
    Micrograph of H3N2 influenza virus particles.
    Pseudostratified epithelium, light micrograph. Pseudostratified epithelium is a type of epithelium that comprises only a single layer of cells. — Stock Photo
    Pseudostratified epithelium, light micrograph. Pseudostratified epithelium is a type of epithelium that comprises only a single layer of cells.
    Coloured scanning electron micrograph of bacteria cultured from mobile phone. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from mobile phone.
    Human blood cells — Stock Photo
    Human blood cells
    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.
    Activated T lymphocytes and red blood cells on scanning electron micrograph. — Stock Photo
    Activated T lymphocytes and red blood cells on scanning electron micrograph.
    Influenza viruses and host cell — Stock Photo
    Influenza viruses and host cell
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Nerve. Coloured scanning electron micrograph (SEM) of a freeze-fracture through a peripheral nerve. Schwann cells wraps their cell membrane around the nerve a number of times. — Stock Photo
    Nerve. Coloured scanning electron micrograph (SEM) of a freeze-fracture through a peripheral nerve. Schwann cells wraps their cell membrane around the nerve a number of times.
    Colored scanning electron micrograph of starch grains in seed of legume. — Stock Photo
    Colored scanning electron micrograph of starch grains in seed of legume.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Human chromosomes, light micrograph. — Stock Photo
    Human chromosomes, light micrograph.