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    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Female researcher using light microscope for examining stem cells in culture jar. — Stock Photo
    Female researcher using light microscope for examining stem cells in culture jar.
    Focused female engineer with screwdriver fixing robotic arm — Stock Photo
    Focused female engineer with screwdriver fixing robotic arm
    Tent caterpillar on green plant stem, close-up — Stock Photo
    Tent caterpillar on green plant stem, close-up
    Miniature snail on a plant, Indonesia — Stock Photo
    Miniature snail on a plant, Indonesia
    Student in wheelchair studying furnace electronic control system in HVAC classroom — Stock Photo
    Student in wheelchair studying furnace electronic control system in HVAC classroom
    Boy building clay volcano at homeschool — Stock Photo
    Boy building clay volcano at homeschool
    Crop anonymous person touching plant twig with frost on thin leaves on blurred background — Stock Photo
    Crop anonymous person touching plant twig with frost on thin leaves on blurred background
    Closeup of dry brown stems of grass growing on meadow in Dolomites mountain range in Italy — Stock Photo
    Closeup of dry brown stems of grass growing on meadow in Dolomites mountain range in Italy
    Young Girl Dropping Parachute from Outdoor Stadium Stairs — Stock Photo
    Young Girl Dropping Parachute from Outdoor Stadium Stairs
    Scientists preparing blood sample for analysis under light microscope. — Stock Photo
    Scientists preparing blood sample for analysis under light microscope.
    Blastocyst hollow ball of cells with fluid, digital illustration. — Stock Photo
    Blastocyst hollow ball of cells with fluid, digital illustration.
    Green seedling of houseplant placed in glass bottle with water on wooden shelf with book near white wall in kitchen — Stock Photo
    Green seedling of houseplant placed in glass bottle with water on wooden shelf with book near white wall in kitchen
    Male teacher and boy student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and boy student using microscope, conducting scientific experiment in laboratory classroom
    Thistle bud weevil sitting on common thistle stem. — Stock Photo
    Thistle bud weevil sitting on common thistle stem.
    Student in wheelchair examining furnace fuel flow controls in HVAC classroom — Stock Photo
    Student in wheelchair examining furnace fuel flow controls in HVAC classroom
    Closeup green tomatoes ripening with raindrops on branches of plant growing in agricultural field in countryside — Stock Photo
    Closeup green tomatoes ripening with raindrops on branches of plant growing in agricultural field in countryside
    Back view of female with wavy hair raising hands while standing near cane with green foliage — Stock Photo
    Back view of female with wavy hair raising hands while standing near cane with green foliage
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells — Stock Photo
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells
    Junior high boy students using computers in computer lab — Stock Photo
    Junior high boy students using computers in computer lab
    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
    Computer programmers testing virtual reality simulator glasses in office — Stock Photo
    Computer programmers testing virtual reality simulator glasses in office
    From above of branch of tree with green lichen on ground covered with dry foliage in autumn forest — Stock Photo
    From above of branch of tree with green lichen on ground covered with dry foliage in autumn forest
    Girl holding a dandelion — Stock Photo
    Girl holding a dandelion
    Close-up of ladybug larva in pupa stage on stem. — Stock Photo
    Close-up of ladybug larva in pupa stage on stem.
    Smiling girl students examining liquid in test tube, conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling girl students examining liquid in test tube, conducting scientific experiment in laboratory classroom
    Row of elegant shiny glasses standing on wooden table in wine cellar with wine bottles on shelves on background — Stock Photo
    Row of elegant shiny glasses standing on wooden table in wine cellar with wine bottles on shelves on background
    Woman holding secateurs and cutting flower stems — Stock Photo
    Woman holding secateurs and cutting flower stems
    Bright halloween pumpkins in dark forest — Stock Photo
    Bright halloween pumpkins in dark forest
    Girl student using microscope in classroom — Stock Photo
    Girl student using microscope in classroom
    Science teacher helping girl student at microscope in classroom laboratory — Stock Photo
    Science teacher helping girl student at microscope in classroom laboratory
    Field harvesting on the fields — Stock Photo
    Field harvesting on the fields
    Young attractive woman with fresh flower looking away and resting on bed in bedroom — Stock Photo
    Young attractive woman with fresh flower looking away and resting on bed in bedroom
    From above of festive stylish decorative Christmas bouquet with twigs of eucalyptus and bright red branches with berries placed on wooden table with candles in room — Stock Photo
    From above of festive stylish decorative Christmas bouquet with twigs of eucalyptus and bright red branches with berries placed on wooden table with candles in room
    Student in wheelchair examining furnace ignitor in HVAC classroom — Stock Photo
    Student in wheelchair examining furnace ignitor in HVAC classroom
    Smiling male science teacher leading lesson at whiteboard in classroom — Stock Photo
    Smiling male science teacher leading lesson at whiteboard in classroom
    High angle of lichen on tree branch among green branches in abundant forest — Stock Photo
    High angle of lichen on tree branch among green branches in abundant forest
    Creative businesswomen using adhesive notes and flow chart, planning in office — Stock Photo
    Creative businesswomen using adhesive notes and flow chart, planning in office
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (blue) and large intercellular air spaces (holes). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (blue) and large intercellular air spaces (holes).
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Close-up of hand of cell biologist holding flask of stem cells cultivated in red growth medium. — Stock Photo
    Close-up of hand of cell biologist holding flask of stem cells cultivated in red growth medium.
    Easter eggs in porcelain egg cartons with eucalyptus stems — Stock Photo
    Easter eggs in porcelain egg cartons with eucalyptus stems
    Focused boy student reading textbook at microscope in laboratory classroom — Stock Photo
    Focused boy student reading textbook at microscope in laboratory classroom
    Visual rendering of human brain — Stock Photo
    Visual rendering of human brain
    Dragonfly (Odonata), Bigodi Wetland Sanctuary, Bwindi Impenetrable Forest; Western Region, Uganda — Stock Photo
    Dragonfly (Odonata), Bigodi Wetland Sanctuary, Bwindi Impenetrable Forest; Western Region, Uganda
    Fresh fragrant stems of narrow leaved black peppermint tree and rosemary placed on metal buckets with Loropetalum plant leaves in flower market — Stock Photo
    Fresh fragrant stems of narrow leaved black peppermint tree and rosemary placed on metal buckets with Loropetalum plant leaves in flower market
    Close-up of bamboo, Japan — Stock Photo
    Close-up of bamboo, Japan
    View of high palms with lush leaves on background of blue sky on sunny day — Stock Photo
    View of high palms with lush leaves on background of blue sky on sunny day
    Top view of raw cut Boletus edulis mushrooms on wooden chopping board with garlic and parsley in light kitchen during cooking process — Stock Photo
    Top view of raw cut Boletus edulis mushrooms on wooden chopping board with garlic and parsley in light kitchen during cooking process
    Computer programmers testing virtual reality simulator glasses in office — Stock Photo
    Computer programmers testing virtual reality simulator glasses in office
    Overhead view of a rustic place setting with eucalyptus stems — Stock Photo
    Overhead view of a rustic place setting with eucalyptus stems
    Cerebellum and corpus callosum — Stock Photo
    Cerebellum and corpus callosum
    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
    Close-up of served festive table with crystal glasses cutlery napkin on plate near bunch of fresh flowers for wedding — Stock Photo
    Close-up of served festive table with crystal glasses cutlery napkin on plate near bunch of fresh flowers for wedding
    Top view of raw cut Boletus edulis mushrooms on wooden chopping board with garlic and parsley in light kitchen during cooking process — Stock Photo
    Top view of raw cut Boletus edulis mushrooms on wooden chopping board with garlic and parsley in light kitchen during cooking process
    Rustic wooden box with glass vases and plants — Stock Photo
    Rustic wooden box with glass vases and plants
    Focused junior high boy student using computer in computer lab — Stock Photo
    Focused junior high boy student using computer in computer lab
    Top view of various types of succulent plants placed in pots on wooden table in light place — Stock Photo
    Top view of various types of succulent plants placed in pots on wooden table in light place
    Closeup view of hands plucking thyme leaves from stem — Stock Photo
    Closeup view of hands plucking thyme leaves from stem
    Red stemmed baby chard — Stock Photo
    Red stemmed baby chard