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    Cross-section through a cotton stem — Stock Photo
    Cross-section through a cotton stem
    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.
    Female scientist holding tray for stem cell research. — Stock Photo
    Female scientist holding tray for stem cell research.
    Female scientist holding multi-well plate with growth medium. — Stock Photo
    Female scientist holding multi-well plate with growth medium.
    Overhead view of boy building clay volcano — Stock Photo
    Overhead view of boy building clay volcano
    Bone marrow stem cells dividing — Stock Photo
    Bone marrow stem cells dividing
    Smiling male science teacher helping girl students conducting scientific experiment at microscope in laboratory — Stock Photo
    Smiling male science teacher helping girl students conducting scientific experiment at microscope in laboratory
    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.
    Cute Blonde Girl With French Braids Works on School Papers at Home — Stock Photo
    Cute Blonde Girl With French Braids Works on School Papers at Home
    Smiling girl conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling girl conducting scientific experiment in laboratory classroom
    Hand of teacher pointing to molecular structure on projection screen — Stock Photo
    Hand of teacher pointing to molecular structure on projection screen
    Young slim woman in cap with fresh flower looking away while standing on balcony on blurred background — Stock Photo
    Young slim woman in cap with fresh flower looking away while standing on balcony on blurred background
    Tropical green nature on red background — Stock Photo
    Tropical green nature on red background
    Exotic hummingbird sitting on twig on blurred background — Stock Photo
    Exotic hummingbird sitting on twig on blurred background
    Colored scanning electron micrograph of stem cell-derived motor neuron cell. — Stock Photo
    Colored scanning electron micrograph of stem cell-derived motor neuron cell.
    Computer programmers testing virtual reality simulator glasses in open plan office — Stock Photo
    Computer programmers testing virtual reality simulator glasses in open plan office
    A western honeybee pollinates a flower — Stock Photo
    A western honeybee pollinates a flower
    Engineers with digital tablet programming robotic arm in office — Stock Photo
    Engineers with digital tablet programming robotic arm in office
    Focused female engineer with screwdriver fixing robotic arm — Stock Photo
    Focused female engineer with screwdriver fixing robotic arm
    A hummingbird sits on a branch — Stock Photo
    A hummingbird sits on a branch
    Freshly picked lilac flowers in a kitchen sink — Stock Photo
    Freshly picked lilac flowers in a kitchen sink
    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 homeschooling looking under microscope — Stock Photo
    Girl homeschooling looking under microscope
    Sensual girl touching stem with leaves — Stock Photo
    Sensual girl touching stem with leaves
    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
    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
    Scientist preparing cells in multiwell plate. — Stock Photo
    Scientist preparing cells in multiwell plate.
    Red stemmed chard with roots — Stock Photo
    Red stemmed chard with roots
    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
    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
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes — Stock Photo
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes
    Dry trees with sticking roots in mountain valley in sunny day — Stock Photo
    Dry trees with sticking roots in mountain valley in sunny day
    Man working in a large greenhouse — Stock Photo
    Man working in a large greenhouse
    Close-up of blossoming wildflowers in Purisim Creek Redwoods; California, United States of America — Stock Photo
    Close-up of blossoming wildflowers in Purisim Creek Redwoods; California, United States of America
    Close-up of technician storing stem cell samples in cryostorage. — Stock Photo
    Close-up of technician storing stem cell samples in cryostorage.
    Girl student examining pink liquid, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student examining pink liquid, conducting scientific experiment in laboratory classroom
    Student in wheelchair taking notes while reading textbook in HVAC classroom — Stock Photo
    Student in wheelchair taking notes while reading textbook in HVAC classroom
    Close up of Empty wine glasses on the table — Stock Photo
    Close up of Empty wine glasses on the table
    Pygmy marmoset holding on green stem in Ecuador, South America — Stock Photo
    Pygmy marmoset holding on green stem in Ecuador, South America
    Illustration of pink stem cell on black background. — Stock Photo
    Illustration of pink stem cell on black background.
    Row of green and ripe cherry tomatoes showing ripening stage on white gauze — Stock Photo
    Row of green and ripe cherry tomatoes showing ripening stage on white gauze
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom — Stock Photo
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom
    Caterpillar cocoon attached to thin plant stem. — Stock Photo
    Caterpillar cocoon attached to thin plant stem.
    Male teacher calling on students in classroom — Stock Photo
    Male teacher calling on students in classroom
    Male teacher and students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Red winterberry branches on a tray with ribbon and scissors — Stock Photo
    Red winterberry branches on a tray with ribbon and scissors
    Human embryonic stem cells in Petri dish, digital illustration. — Stock Photo
    Human embryonic stem cells in Petri dish, digital illustration.
    Woody stem section. Coloured scanning electron micrograph (SEM) of a transverse section through the stem of a woody plant. The majority of tissue seen here is secondary xylem (dark brown) — Stock Photo
    Woody stem section. Coloured scanning electron micrograph (SEM) of a transverse section through the stem of a woody plant. The majority of tissue seen here is secondary xylem (dark brown)
    Gnocchi with Broccoli, Broccoli Stem , Basil Pesto and Vegan sausages — Stock Photo
    Gnocchi with Broccoli, Broccoli Stem , Basil Pesto and Vegan sausages
    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 in rubber gloves using equipment in laboratory — Stock Photo
    Scientists in rubber gloves using equipment in laboratory
    Field harvesting on the fields — Stock Photo
    Field harvesting on the fields
    Delicate strawflowers with orange and yellow petals on black background in dark studio — Stock Photo
    Delicate strawflowers with orange and yellow petals on black background in dark studio
    Closeup view of Glass vases with eucalyptus — Stock Photo
    Closeup view of Glass vases with eucalyptus
    Monarch Butterfly Caterpillar (Danaus Plexippus) On Leaf, Shirley Richardson Butterfly Garden; Winnipeg, Manitoba, Canada — Stock Photo
    Monarch Butterfly Caterpillar (Danaus Plexippus) On Leaf, Shirley Richardson Butterfly Garden; Winnipeg, Manitoba, Canada
    Male teacher helping girl student at microscope in laboratory classroom — Stock Photo
    Male teacher helping girl student at microscope in laboratory classroom
    Student in wheelchair studying furnace electronic control system in HVAC classroom — Stock Photo
    Student in wheelchair studying furnace electronic control system in HVAC classroom
    Female teacher and girl student conducting scientific experiment at microscope in laboratory — Stock Photo
    Female teacher and girl student conducting scientific experiment at microscope in laboratory
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree. — Stock Photo
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree.
    Lemon with stem and leaves — Stock Photo
    Lemon with stem and leaves