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    Female biologist holding flask containing stem cells. — Stock Photo
    Female biologist holding flask containing stem cells.
    Female cell biologist examining flask containing stem cells cultivated in red growth medium. — Stock Photo
    Female cell biologist examining flask containing stem cells cultivated in red growth medium.
    Laboratory worker pipetting liquid into microcentrifuge tube. — Stock Photo
    Laboratory worker pipetting liquid into microcentrifuge tube.
    Female cell biologist placing flask containing stem cells cultivated in red growth medium under microscope. — Stock Photo
    Female cell biologist placing flask containing stem cells cultivated in red growth medium under microscope.
    Meadow with dry plants — Stock Photo
    Meadow with dry plants
    Glass vases with dried plants and branches covered with leaves decorating room of home — Stock Photo
    Glass vases with dried plants and branches covered with leaves decorating room of home
    Professor discussing sensors and thermostats with students in an HVAC classroom — Stock Photo
    Professor discussing sensors and thermostats with students in an HVAC classroom
    Curious girl student examining molecular structure — Stock Photo
    Curious girl student examining molecular structure
    Back view anonymous shirtless male sitting in dark room near tender thin plant twig with withering leaves — Stock Photo
    Back view anonymous shirtless male sitting in dark room near tender thin plant twig with withering leaves
    Beautiful blooming yellow wildflowers and sunset — Stock Photo
    Beautiful blooming yellow wildflowers and sunset
    Students examining condenser coil on refrigeration unit in HVAC classroom — Stock Photo
    Students examining condenser coil on refrigeration unit in HVAC classroom
    Branch of a drying plant;Yelapa jalisco mexico — Stock Photo
    Branch of a drying plant;Yelapa jalisco mexico
    Illustration of beige stem cell on black background. — Stock Photo
    Illustration of beige stem cell on black background.
    Slim woman wearing shorts and top and standing in high field grass and touching stem tenderly — Stock Photo
    Slim woman wearing shorts and top and standing in high field grass and touching stem tenderly
    Branch of spruce with thin needles with melting snow in forest in winter day — Stock Photo
    Branch of spruce with thin needles with melting snow in forest in winter day
    Sorriso Cocktail in Glass — Stock Photo
    Sorriso Cocktail in Glass
    Lime Martini in Fun Stem Glass — Stock Photo
    Lime Martini in Fun Stem Glass
    Junior high students at computers watching teacher at projection screen in classroom — Stock Photo
    Junior high students at computers watching teacher at projection screen in classroom
    Close-up of delicate white blossom of Snakes Head Fritillary on meadow. — Stock Photo
    Close-up of delicate white blossom of Snakes Head Fritillary on meadow.
    Male designer examining transparency diagram in office — Stock Photo
    Male designer examining transparency diagram in office
    Little boy examining bug under microscope — Stock Photo
    Little boy examining bug under microscope
    Students conducting scientific experiment, pouring liquid in beaker in laboratory classroom — Stock Photo
    Students conducting scientific experiment, pouring liquid in beaker in laboratory classroom
    Science teacher assembling molecule model in laboratory classroom — Stock Photo
    Science teacher assembling molecule model in laboratory classroom
    Red chard and beetroot halves in front of a black background — Stock Photo
    Red chard and beetroot halves in front of a black background
    Smiling girl conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling girl conducting scientific experiment in laboratory classroom
    Wheat with a ripening ear — Stock Photo
    Wheat with a ripening ear
    Positive child with dirty gardening shovel looking at camera against bag with tropical plant in countryside — Stock Photo
    Positive child with dirty gardening shovel looking at camera against bag with tropical plant in countryside
    From above of tender bright green flower on body of crop anonymous tanned person in sunlight — Stock Photo
    From above of tender bright green flower on body of crop anonymous tanned person in sunlight
    Empty white frame hanging on bright dyed green and purple exotic plants in daylight — Stock Photo
    Empty white frame hanging on bright dyed green and purple exotic plants in daylight
    Top view of raw cut Boletus edulis mushrooms on rustic wooden chopping board during cooking process — Stock Photo
    Top view of raw cut Boletus edulis mushrooms on rustic wooden chopping board during cooking process
    Girl student examining pink liquid, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student examining pink liquid, conducting scientific experiment in laboratory classroom
    Fresh tangerine with stem and leaves on dark background — Stock Photo
    Fresh tangerine with stem and leaves on dark background
    Human embryonic stem cell on pin tip, conceptual digital artwork. — Stock Photo
    Human embryonic stem cell on pin tip, conceptual digital artwork.
    Close up of Western sword ferns (Polystichum munitum) in lush, temperate rainforest, along the North Fork Snoqualmie River, near North Bend, Washington — Stock Photo
    Close up of Western sword ferns (Polystichum munitum) in lush, temperate rainforest, along the North Fork Snoqualmie River, near North Bend, Washington
    Bouquet of fresh flowers including white lilies eustoma and aster in glass vase at sunshine — Stock Photo
    Bouquet of fresh flowers including white lilies eustoma and aster in glass vase at sunshine
    Scientists with digital tablet and specimen tray in laboratory — Stock Photo
    Scientists with digital tablet and specimen tray in laboratory
    Scenery of hill covered with snow and bare shrubs growing in winter nature under cloudless blue sky — Stock Photo
    Scenery of hill covered with snow and bare shrubs growing in winter nature under cloudless blue sky
    Dry grass in meadow — Stock Photo
    Dry grass in meadow
    Close-up of single gentle twig in grassland — Stock Photo
    Close-up of single gentle twig in grassland
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory — Stock Photo
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory
    Plants with peppers and wavy foliage on thin stalks growing in row in greenhouse — Stock Photo
    Plants with peppers and wavy foliage on thin stalks growing in row in greenhouse
    Purple lily flower in glass vase — Stock Photo
    Purple lily flower in glass vase
    From above delicate green thin plant on body of crop unrecognizable person on sunny day — Stock Photo
    From above delicate green thin plant on body of crop unrecognizable person on sunny day
    Two halves of red orange on a wooden plate that a bengal cat is trying to steal — Stock Photo
    Two halves of red orange on a wooden plate that a bengal cat is trying to steal
    Cropped image of bunch of green garlic on table — Stock Photo
    Cropped image of bunch of green garlic on table
    Young charming brunette woman in cap looking at camera and holding fresh red flower in room — Stock Photo
    Young charming brunette woman in cap looking at camera and holding fresh red flower in room
    Instructor training students about air conditioning units in HVAC classroom — Stock Photo
    Instructor training students about air conditioning units in HVAC classroom
    Green frog on plant stem, close-up. — Stock Photo
    Green frog on plant stem, close-up.
    Close up of aloe stalks on white background — Stock Photo
    Close up of aloe stalks on white background
    Smiling girl students assembling computer in classroom — Stock Photo
    Smiling girl students assembling computer in classroom
    Pieces of fresh green Aloe Vera in row on white background — Stock Photo
    Pieces of fresh green Aloe Vera in row on white background
    Back view full body of anonymous female with raised hand carrying wicker basket between blooming trees in garden — Stock Photo
    Back view full body of anonymous female with raised hand carrying wicker basket between blooming trees in garden
    Millettia stem in tea strainer — Stock Photo
    Millettia stem in tea strainer
    Female teacher and curious girl students examining molecular structure in laboratory classroom — Stock Photo
    Female teacher and curious girl students examining molecular structure in laboratory classroom
    Creeping plants shadow on window curtain — Stock Photo
    Creeping plants shadow on window curtain
    Dense evergreen forest with covered by moss tall redwoods in Big Basin Redwoods State Park in USA — Stock Photo
    Dense evergreen forest with covered by moss tall redwoods in Big Basin Redwoods State Park in USA
    Brown and white eggs in glass with stem — Stock Photo
    Brown and white eggs in glass with stem
    Old rustic box on linen tablecloth with wooden kitchen utensils — Stock Photo
    Old rustic box on linen tablecloth with wooden kitchen utensils
    Close-up green leaves of plant growing in nature — Stock Photo
    Close-up green leaves of plant growing in nature
    Instructor discussing condenser coil on refrigeration unit with student in wheelchair — Stock Photo
    Instructor discussing condenser coil on refrigeration unit with student in wheelchair