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    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Trypanosoma brucei protozoan — Stock Photo
    Trypanosoma brucei protozoan
    Bolivia, Laguna Canapa, scenic mountains landscape with by lake with flamongos — Stock Photo
    Bolivia, Laguna Canapa, scenic mountains landscape with by lake with flamongos
    Peru, Cusco, Urubamba, Scenic view of Machu Picchu is a UNESCO world heritage site, crowd of tourists sightseeing — Stock Photo
    Peru, Cusco, Urubamba, Scenic view of Machu Picchu is a UNESCO world heritage site, crowd of tourists sightseeing
    Peru, Cusco, Urubamba, Machu Picchu facade, UNESCO world heritage site — Stock Photo
    Peru, Cusco, Urubamba, Machu Picchu facade, UNESCO world heritage site
    Bolivia, Laguna Colorada scenic landscape with mountain at background and flamingos by the lake — Stock Photo
    Bolivia, Laguna Colorada scenic landscape with mountain at background and flamingos by the lake
    Salmonella typhimurium bacterium — Stock Photo
    Salmonella typhimurium bacterium
    Blood clotting in an ovarian follicle — Stock Photo
    Blood clotting in an ovarian follicle
    Trypanosoma brucei protozoan — Stock Photo
    Trypanosoma brucei protozoan
    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together — Stock Photo
    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together
    Peru, Puno, Small camel eating green leaves, closeup — Stock Photo
    Peru, Puno, Small camel eating green leaves, closeup
    Peru, Puno, people living on floating islands of reeds on lake — Stock Photo
    Peru, Puno, people living on floating islands of reeds on lake
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Light micrograph of human red blood cells (erythrocytes), with two unidentified white blood cells (leucocytes) near the centre. — Stock Photo
    Light micrograph of human red blood cells (erythrocytes), with two unidentified white blood cells (leucocytes) near the centre.
    Natural landscape with Licancabur volcano on the border between Bolivia and Chile — Stock Photo
    Natural landscape with Licancabur volcano on the border between Bolivia and Chile
    Climbing lily pollen — Stock Photo
    Climbing lily pollen
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood — Stock Photo
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood
    Micrograph of tendon fibres — Stock Photo
    Micrograph of tendon fibres
    Trypanosoma brucei protozoan — Stock Photo
    Trypanosoma brucei protozoan
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter — Stock Photo
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter
    Bolivia, Laguna Colorada scenic landscape with flamingos at lake — Stock Photo
    Bolivia, Laguna Colorada scenic landscape with flamingos at lake
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood — Stock Photo
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood
    PC12 neurone in culture — Stock Photo
    PC12 neurone in culture
    Double rainbow over a cityscape, Guildford; Surrey, British Columbia, Canada — Stock Photo
    Double rainbow over a cityscape, Guildford; Surrey, British Columbia, Canada
    Acinar pancreatic cell — Stock Photo
    Acinar pancreatic cell
    Trypanosoma brucei protozoan — Stock Photo
    Trypanosoma brucei protozoan
    Cat flea head — Stock Photo
    Cat flea head
    Man feeding pelican on beach, Pisco, Ica, Peru — Stock Photo
    Man feeding pelican on beach, Pisco, Ica, Peru
    Red blood cells and platelets — Stock Photo
    Red blood cells and platelets
    Hair follicles of human skin — Stock Photo
    Hair follicles of human skin
    Bolivia, Laguna Colorada scenic landscape with flamingo birds — Stock Photo
    Bolivia, Laguna Colorada scenic landscape with flamingo birds
    Horse chestnut pollen grain — Stock Photo
    Horse chestnut pollen grain
    Bolivia, Departamento de Potosi, Sur Lopez, mud volcano — Stock Photo
    Bolivia, Departamento de Potosi, Sur Lopez, mud volcano
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood — Stock Photo
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood
    Adult woman in national clothes on city street, La Paz, Departamento de La Paz, Bolivia — Stock Photo
    Adult woman in national clothes on city street, La Paz, Departamento de La Paz, Bolivia
    Pancreatic cancer cells — Stock Photo
    Pancreatic cancer cells
    Blood clot structure — Stock Photo
    Blood clot structure
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter — Stock Photo
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter
    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together — Stock Photo
    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together
    House dust mites — Stock Photo
    House dust mites
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Coloured scanning electron micrograph (SEM) of sensory inner hair cells from the organ of corti, in the cochlea of the inner ear. — Stock Photo
    Coloured scanning electron micrograph (SEM) of sensory inner hair cells from the organ of corti, in the cochlea of the inner ear.
    Kidney stone crystals, coloured scanning electron micrograph (SEM). — Stock Photo
    Kidney stone crystals, coloured scanning electron micrograph (SEM).