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    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.
    Student demonstrating air conditioner recharging manifold with gauges in HVAC classroom — Stock Photo
    Student demonstrating air conditioner recharging manifold with gauges in HVAC classroom
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Cross-section through a cotton stem — Stock Photo
    Cross-section through a cotton stem
    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.
    Lily stem. Light micrograph(LM) of section through part of lily (Lilium) stem. Thin outer epidermis surrounds layer of cortex. At center is pith, which contains numerous vascular bundles (yellow) — Stock Photo
    Lily stem. Light micrograph(LM) of section through part of lily (Lilium) stem. Thin outer epidermis surrounds layer of cortex. At center is pith, which contains numerous vascular bundles (yellow)
    Scientist pipetting sample into growth medium in multiwell plate. — Stock Photo
    Scientist pipetting sample into growth medium in multiwell plate.
    Female teacher and students programming and assembling robotics in classroom — Stock Photo
    Female teacher and students programming and assembling robotics in classroom
    Enthusiastic computer programmers testing virtual reality simulator glasses in office — Stock Photo
    Enthusiastic computer programmers testing virtual reality simulator glasses in office
    Various pot plants on wooden table — Stock Photo
    Various pot plants on wooden table
    Red stemmed baby chard — Stock Photo
    Red stemmed baby chard
    From above of prickly cacti with spiky stems growing in pots in botanical garden — Stock Photo
    From above of prickly cacti with spiky stems growing in pots in botanical garden
    From above of small green echeveria plant placed on wooden table with roots and dirt in light place — Stock Photo
    From above of small green echeveria plant placed on wooden table with roots and dirt in light place
    Junior high teacher helping students using computers in computer lab — Stock Photo
    Junior high teacher helping students using computers in computer lab
    Side view of of redhead female standing among tropical palm and plants in glasshouse — Stock Photo
    Side view of of redhead female standing among tropical palm and plants in glasshouse
    Scientist holding multi-well plate with growth medium. — Stock Photo
    Scientist holding multi-well plate with growth medium.
    Texture of dry fallen yellow autumn leaf with thin veins and stem against blurred gray background — Stock Photo
    Texture of dry fallen yellow autumn leaf with thin veins and stem against blurred gray background
    From above bright red appetizing cherries with stems on pink background — Stock Photo
    From above bright red appetizing cherries with stems on pink background
    Designers brainstorming in conference room meeting — Stock Photo
    Designers brainstorming in conference room meeting
    Dreamy unrecognizable redhead female in dress standing near glass windows of glasshouse with lush plants — Stock Photo
    Dreamy unrecognizable redhead female in dress standing near glass windows of glasshouse with lush plants
    Beautiful Nordic drink in small high stem glass sprinkled with red powder and leaf served on grey cloth with scattered dried rose petals on blurred background — Stock Photo
    Beautiful Nordic drink in small high stem glass sprinkled with red powder and leaf served on grey cloth with scattered dried rose petals on blurred background
    Unripe and ripe cherry tomatoes growing on twig of plant in agricultural farm in rural area — Stock Photo
    Unripe and ripe cherry tomatoes growing on twig of plant in agricultural farm in rural area
    Cropped image of female florist trimming flower stems at her flower shop — Stock Photo
    Cropped image of female florist trimming flower stems at her flower shop
    Close-up of diamondback moth cocoon on wild plant stem. — Stock Photo
    Close-up of diamondback moth cocoon on wild plant stem.
    Focused male scientist with test tube researching coronavirus — Stock Photo
    Focused male scientist with test tube researching coronavirus
    Computer programmers testing virtual reality simulator glasses in office — Stock Photo
    Computer programmers testing virtual reality simulator glasses in office
    Frog hopper and parasitic red mite nymphs on plant stem. — Stock Photo
    Frog hopper and parasitic red mite nymphs on plant stem.
    Closeup of tasty ripe fig slices with aromatic thyme sprigs on plate on wooden surface — Stock Photo
    Closeup of tasty ripe fig slices with aromatic thyme sprigs on plate on wooden surface
    Bigleaf maple leaf (Acer macrophyllum) in autumn, in small tree branch — Stock Photo
    Bigleaf maple leaf (Acer macrophyllum) in autumn, in small tree branch
    Plant with thin stem and tiny pure water drops on curved leaf growing in woods on blurred background — Stock Photo
    Plant with thin stem and tiny pure water drops on curved leaf growing in woods on blurred background
    Close-up of dried lotus flower stem with pistil — Stock Photo
    Close-up of dried lotus flower stem with pistil
    Closeup view of two empty Champagne glasses — Stock Photo
    Closeup view of two empty Champagne glasses
    Boy building clay volcano at homeschool — Stock Photo
    Boy building clay volcano at homeschool
    Close-up of a bug on a plant, Indonesia — Stock Photo
    Close-up of a bug on a plant, Indonesia
    Technician checking stem cell cultures in bioengineering laboratory. — Stock Photo
    Technician checking stem cell cultures in bioengineering laboratory.
    Long leaves and pastel flower buds, coloured X-ray. — Stock Photo
    Long leaves and pastel flower buds, coloured X-ray.
    Engineers working at computer in office — Stock Photo
    Engineers working at computer in office
    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.
    Lime tree stem — Stock Photo
    Lime tree stem
    Close up of small gray lizard looking out of trunk in the forest — Stock Photo
    Close up of small gray lizard looking out of trunk in the forest
    Close-up of transparent glass vases with bunches of fresh flowers placed on table for event — Stock Photo
    Close-up of transparent glass vases with bunches of fresh flowers placed on table for event
    Student setting up generator experiment while instructor discusses HVAC system to student in wheelchair — Stock Photo
    Student setting up generator experiment while instructor discusses HVAC system to student in wheelchair
    Five butterflies on a plant stem — Stock Photo
    Five butterflies on a plant stem
    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
    Closeup view of hands plucking thyme leaves from stem — Stock Photo
    Closeup view of hands plucking thyme leaves from stem
    Green frog on plant stem, close-up. — Stock Photo
    Green frog on plant stem, close-up.
    Female biologist holding flask containing stem cells. — Stock Photo
    Female biologist holding flask containing stem cells.
    Top view of bunch of whole raw carrots with stems and leaves on wooden surface — Stock Photo
    Top view of bunch of whole raw carrots with stems and leaves on wooden surface
    Close-up of red skinned Gala apple on tree. — Stock Photo
    Close-up of red skinned Gala apple on tree.
    Top view full frame composition of bright multicolored dried autumn leaves on black background — Stock Photo
    Top view full frame composition of bright multicolored dried autumn leaves on black background
    Student in wheelchair beside furnace fuel flow controls in HVAC classroom — Stock Photo
    Student in wheelchair beside furnace fuel flow controls in HVAC classroom
    Focused girl student programming robotics at laptop in classroom — Stock Photo
    Focused girl student programming robotics at laptop in classroom
    Curious boy examining molecule model in laboratory classroom — Stock Photo
    Curious boy examining molecule model in laboratory classroom
    Closeup view of pink gerbera flower — Stock Photo
    Closeup view of pink gerbera flower
    Young sensual female in black clothes with blossoming flower looking at camera — Stock Photo
    Young sensual female in black clothes with blossoming flower looking at camera
    Flower of chrysanthemum plant on white background. — Stock Photo
    Flower of chrysanthemum plant on white background.
    Scientists preparing blood sample for analysis under light microscope. — Stock Photo
    Scientists preparing blood sample for analysis under light microscope.
    Close-up view of Swiss Chard Leaf — Stock Photo
    Close-up view of Swiss Chard Leaf
    Students assembling robotics in classroom — Stock Photo
    Students assembling robotics in classroom
    Creeping plants shadow on window curtain — Stock Photo
    Creeping plants shadow on window curtain